Rosslyn Chapel, also known as the Collegiate Chapel of Saint Matthew, is a 15th-century Episcopal chapel located in the village of Roslin in Midlothian, Scotland. The chapel was founded by William Sinclair, 1st Earl of Caithness with a ground-breaking ceremony in 1456. After the Scottish Reformation in 1560, it was largely abandoned but, following a visit by Queen Victoria, it was rededicated in 1862. It was the target of a bombing in 1914 during the suffragette bombing and arson campaign. The interior contains some fine carvings which many historians have sought to interpret. 
Since the late 1980s, the chapel has been the subject of speculative theories concerning a connection with the Knights Templar and the Holy Grail, and Freemasonry. It was prominently featured in this role in Dan Brown's bestselling novel "The Da Vinci Code" (2003) and its 2006 film adaptation. Medieval historians say these accounts have no basis in fact. Rosslyn Chapel remains privately owned.
History.
Early history.
The chapel is dedicated to Saint Matthew the Evangelist and was founded on a small hill above Roslin Glen as a collegiate church (with between four and six ordained canons and two boy choristers) in the mid-15th century. The chapel was founded by William Sinclair, 1st Earl of Caithness of the Scoto-Norman Sinclair family. Rosslyn Chapel is the third Sinclair place of worship at Roslin, the first being in Roslin Castle and the second (whose crumbling buttresses can still be seen today) in what is now Roslin Cemetery.
Sinclair founded the college to celebrate the Liturgy of the Hours throughout the day and night, and also to celebrate Catholic Masses for all the faithful departed, including the deceased members of the Sinclair family. During this period, the rich heritage of plainsong (a single melodic line) or polyphony (vocal harmony) were used to enrich the singing of the liturgy. Sinclair provided an endowment to pay for the support of the priests and choristers in perpetuity.
After the Scottish Reformation in 1560, Catholic worship in the chapel was brought to an end. The chapel's altars were destroyed in 1592.
In 1842 the chapel, then in a ruined and overgrown state, was visited by Queen Victoria, who expressed a desire that it should be preserved. Restoration work was carried out in 1862 by David Bryce on behalf of James Alexander, 3rd Earl of Rosslyn. The chapel was rededicated on 22 April 1862, and from this time, Sunday services were once again held, now under the jurisdiction of the Scottish Episcopal Church.
1914 bombing.
The chapel was the subject of a terrorist attack on 11 July 1914, when a bomb exploded inside the building. This was as part of the suffragette bombing and arson campaign of 1912–1914, in which suffragettes carried out a series of politically motivated bombing and arson attacks nationwide as part of their campaign for women's suffrage. Churches were a particular target during the campaign, as it was believed that the Church of England was complicit in reinforcing opposition to women's suffrage. Between 1913 and 1914, 32 churches were attacked nationwide. In the weeks leading up to the attack, there were also bombings at Westminster Abbey and St Paul's Cathedral.
Restoration, conservation and tourism.
The Rosslyn Chapel Trust was established in 1995, with the purpose of overseeing its conservation and its opening as a sightseeing destination. The chapel underwent an extensive programme of conservation between 1997 and 2013. This included work to the roof, the stone, the carvings, the stained glass and the organ. A steel canopy was erected over the chapel roof for fourteen years. This was to prevent further rain damage to the church and also to give it a chance to dry out properly. Three human skeletons were found during the restoration. Major stonework repairs were completed by the end of 2011. The last major scaffolding was removed in August 2010.
A new visitor centre opened in July 2011. The chapel's stained-glass windows and organ were fully restored. New lighting and heating were installed. The expected cost of the restoration work is around £13 million, with about £3.7 million being spent on the Visitor Centre. Funding has come from various sources including Heritage Lottery Fund, Historic Scotland and the environmental body, WREN. Actor Tom Hanks also made a donation.
Photography and video have been forbidden in the chapel since 2008. The chapel sells commercially produced photos in its shop. In 2006, historian Louise Yeoman criticised the Rosslyn Chapel trust for "cashing in" on the popularity of "The Da Vinci Code", against better knowledge.
In the financial year of 2013–14, Rosslyn Chapel recorded 144,823 visitors, the highest number since 2007–08, when (at the height of popular interest induced by "The Da Vinci Code"), the number of visitors was close to 159,000. The current owner is Peter St Clair-Erskine, 7th Earl of Rosslyn.
Architecture.
The original plans for Rosslyn have never been found or recorded, so it is open to speculation whether or not the chapel was intended to be built in its current layout. Its architecture is considered to be among the finest in Scotland.
Construction of the chapel began on 20 September 1456, although it has often been recorded as 1446. The confusion over the building date comes from the chapel's receiving its founding charter to build a collegiate chapel in 1446 from Rome.
Although the original building was to be cruciform, it was never completed. Only the choir was constructed, with the retro-chapel, otherwise called the Lady chapel, built on the much earlier crypt (Lower Chapel) believed to form part of an earlier castle. The foundations of the unbuilt nave and transepts stretching to a distance of 90 feet were recorded in the 19th century. Construction of the planned nave and transepts was abandoned.
The Lower Chapel (also known as the crypt or sacristy) should not be confused with the burial vaults that lie underneath Rosslyn Chapel.
The chapel stands on fourteen pillars, which form an arcade of twelve pointed arches on three sides of the nave. At the east end, a fourteenth pillar between the penultimate pair form a three-pillared division between the nave and the Lady chapel. The three pillars at the east end of the chapel are named, from north to south: the Master Pillar, the Journeyman Pillar and, most famously, the Apprentice Pillar.
Apprentice pillar.
One of the more notable architectural features of the chapel is the "Apprentice Pillar, or "Prentice Pillar". Originally called the "Prince's Pillar" (in the 1778 document "An Account of the Chapel of Roslin") the name morphed over time due to a legend dating from the 18th century, involving the master mason in charge of the stonework in the chapel and his young apprentice mason. According to the legend, the master mason did not believe that the apprentice could perform the complicated task of carving the column without seeing the original which formed the inspiration for the design. The master mason travelled to see the original himself, but upon his return was enraged to find that the upstart apprentice had completed the column by himself. In a fit of jealous anger, the master mason took his mallet and struck the apprentice on the head, killing him. The legend concludes that as punishment for his crime, the master mason's face was carved into the opposite corner to forever gaze upon his apprentice's pillar.
On the architrave joining the pillar there is an inscription, "Forte est vinum fortior est rex fortiores sunt mulieres super omnia vincit veritas": "Wine is strong, a king is stronger, women are stronger still, but truth conquers all" (1 Esdras, chapters 3 &amp; 4).
The author Henning Klovekorn has proposed that the pillar is representative of one of the roots of the Nordic Yggdrasil tree, prominent in Germanic and Norse mythology. The general form of the pillar has been related to a type described by the French architect Eugène Viollet-le-Duc as a "bunch of sausages."
A full-size plaster cast of the Apprentice Pillar and the adjacent bay of the chapel was made in 1871, and is in the Cast Courts of the Victoria and Albert Museum in London.
Carvings.
Among Rosslyn's many intricate carvings are a sequence of 213 cubes or "boxes" protruding from pillars and arches with a selection of patterns on them. It is unknown if these patterns have any particular meaning attached to them. Many people have attempted to find information coded into them, but no interpretation has yet proven conclusive. Unfortunately, many of these 'boxes' are not original, having been replaced in the 19th century after erosion damage.
One recent attempt to make sense of the boxes has been to interpret them as a musical score. The motifs on the boxes somewhat resemble geometric patterns seen in the study of cymatics. The patterns are formed by placing powder upon a flat surface and vibrating the surface at different frequencies. By matching these Chladni patterns with musical notes corresponding to the same frequencies, the father-and-son team of Thomas and Stuart Mitchell produced a tune which Stuart calls the "Rosslyn Motet".
There are more than 110 carvings of "Green Men" in and around the chapel. Green Men are carvings of human faces with greenery all around them, often growing out of their mouths. They are found in all areas of the chapel, with one example in the Lady chapel, between the two middle altars of the east wall.
Other carvings represent plants, including depictions of wheat, strawberries or lilies. 
The authors Robert Lomas and Christopher Knight have hypothesised that some carvings in the chapel represent ears of new world corn or maize, a plant which was unknown in Europe at the time of the chapel's construction. In their book they discuss meeting with the wife of botanist Adrian Dyer, and that Dyer's wife told him that Dyer agreed that the image thought to be maize was accurate. In fact, Dyer found only one identifiable plant among the botanical carvings and suggested that the "maize" and "aloe" were stylised wooden patterns, only coincidentally looking like real plants.
Crypt.
The chapel has been a burial place for several generations of the Sinclairs; a crypt was once accessible from a descending stair at the rear of the chapel. This crypt has been sealed shut for many years, which may explain the recurrent legends that it is merely a front to a more extensive subterranean vault containing (variously) the mummified head of Jesus Christ, the Holy Grail, the treasure of the Templars, or the original crown jewels of Scotland.
In 1837, when the 2nd Earl of Rosslyn died, his wish was to be buried in the original vault. Exhaustive searches over the period of a week were made, but no entrance to the original vault was found and he was buried beside his wife in the Lady Chapel.
Rooftop pinnacle.
The pinnacles on the rooftop have been subject to interest during renovation work in 2010. Nesting jackdaws had made the pinnacles unstable and as such had to be dismantled brick by brick revealing the existence of a chamber specifically made by the stonemasons to harbour bees. The hive, now abandoned, has been sent to local bee keepers to identify.
In popular culture.
Templar and Masonic connections.
The chapel became the subject of speculation regarding its supposed connection with the Knights Templar or Freemasonry beginning in the 1980s. This part of its history was referenced in the DC Comics storyline "Batman: Scottish Connection", in which the hero Batman becomes caught up in an old vendetta between two Scottish clans during a visit to Scotland, this mystery including the discovery of an ancient treasure trove hidden in Rosslyn.
The topic entered mainstream pop culture with Dan Brown's "The Da Vinci Code" (2003), reinforced by the subsequent film of the same name (2006).
Numerous books were published after 2003 to cater to the popular interest in supposed connections between Rosslyn Chapel, Freemasonry, the Templars and the Holy Grail generated by Brown's novel.
The chapel, built 150 years after the dissolution of the Knights Templar, supposedly has many Templar symbols, such as the "Two riders on a single horse" that appear on the Knights Templar Seal.
William Sinclair 3rd Earl of Orkney, Baron of Roslin and 1st Earl of Caithness, claimed by novelists to be a hereditary Grand Master of the Scottish stonemasons, built Rosslyn Chapel. A later William Sinclair of Roslin became the first Grand Master of the Grand Lodge of Scotland and, subsequently, several other members of the Sinclair family have held this position.
Robert L. D. Cooper, curator of the Grand