Architecture in Stockholm
The buildings that survive from this period are mostly churches and royal buildings, since these were built from more durable materials than most other buildings from that period. Birger Jarls torn ("The Tower Of Birger Jarl") was considered the oldest building in the entire city, however, it is now known to have been erected by Gustav Vasa in the 16th century. The Riddarholmen Church from the late 13th century is considered to be the oldest surviving building in Stockholm. While it came to serve as the church of choice for royal burials, another church, the Storkyrkan ("Great Church") came to be used for coronations. Both of the churches have been redesign several times since their erection.
Stockholm Palace
In 1956 to 1958, Gustav III's Museum of Antiquities was restored. Architect and Chief Intendant Ivar Tengbom was appointed for the work. The Treasury was opened in 1970 and the Tre Kronor Museum in 1999. In 2018 600 solar panels were installed on the roof of the palace and are expected to generate an annual output of 170 MWh or at least twelve percent of the palace’s annual electricity consumption.