The Great Synagogue is an Orthodox Jewish congregation and synagogue, located at Krystalgade 12, in Copenhagen, Denmark. The congregation was formed at some stage during the 17th century and their first synagogue completed in 1766. The current synagogue was completed in 1833 and is defined by its unique architecture around the Ark. During the first half of the 19th century, synagogues continued to be built in the classical tradition, but there began to be a revival of Greek and Roman architecture. The Great Synagogue in Copenhagen is one of a few synagogues of its period to use Egyptian elements in the columns, ceiling and cornice over the ark.