The largest synagogue in Europe was built between 1854 and 1859 following plans by Ludwig Förster. With Byzantine-Moorish inspiration, it is a beautiful building made of coloured brick, topped with two towers with onion-shaped domes. On the inside, look out for the two floors of galleries in wood, the two chandeliers, the wealth of the decoration on the ribbed ceiling and the arch of alliance to which your stare settles as soon as you come in through the door.