Relics of Muhammad
Traditionally, Islam has had a rich history of the veneration of relics, especially of those attributed to the Islamic prophet Muhammad. There exists historical evidence that some of the earliest Muslims practiced the veneration of relics, and the practice continued to remain popular in many parts of the Sunni Islamic world until the eighteenth-century, when the reform movements of Salafism and Wahhabism began to staunchly condemn such practices due to their linking it with the sin of "shirk" (idolatry). As a result of the influence of these perspectives, some contemporary Muslims influenced by these ideologies have rejected the traditional practice of relic-veneration altogether. The most genuine prophetic relics are believed to be those housed in Istanbul's Topkapı Palace, in a section known as "Hirkai Serif Odasi" (Chamber of the Holy Mantle).
Royal Palaces of Abomey
In recognition of the unique cultural significance of these monuments, UNESCO inscribed the Royal Palaces of Abomey under the List of World Heritage Sites in 1985 under Culture – Criteria IV. The site inscribed consists of two zones namely, the palaces which form the principal zone and the Akaba Palace Zone on the north-northwest part of the site; both zones are enclosed within a partially preserved cob walls. The UNESCO inscription states: "From 1625 to 1900 twelve kings succeeded one another at the head of the powerful Kingdom of Abomey. With the exception of King Akaba, who used a separate enclosure, they each had their palaces built within the same cob-wall area, in keeping with previous palaces as regards the use of space and materials. The royal palaces of Abomey are a unique reminder of this vanished kingdom." The Royal Palaces of Abomey were taken off the List of World Heritage Sites in Danger in July 2007.