It took the Ottomans three years to capture Nafplion in the sixteenth century. However, once they became masters of the town, they lost no time leaving their mark on the city. The so-called Trianon (from the name of a theatre that operated in the building since the late 19th century) is the oldest extant mosque in Nafplion and possibly the only building from the decades immediately following the city's fall to the Ottomans to survive. There are strong elements of Byzantine (i.e. Christian) architecture. The mosque is square with a large central dome, and an arcade on the west side roofed with three smaller domes. As with most old buildings in Nafplion, it was put to various uses through the centuries, including a Roman Catholic church in the late seventeenth century and a school from 1828 until early 1833.