The Old-New Synagogue is small, dark and low, and it has been in use since about 1270. It is a twin-nave Gothic hall — two rows of vaults carried on a pair of central pillars — and the oldest surviving building of that plan anywhere. An iron grille rings the reading platform in the middle, and a red banner granted by Charles IV in 1358 hangs above it. Women follow the service from annexes at the side, through narrow openings in the wall.
Prague's community still holds its services here, so this is a working synagogue with a visiting hour rather than a monument. What it has outlived is the point: it stood through the clearance of the Jewish quarter in the 1890s and through the German occupation, when the community around it did not. Its name comes from a legend about stones brought from the Temple in Jerusalem, and it is a pun that only works across two languages. The attic is closed, and has always been closed.