Today the old Jewish quarter is marked by atmospheric, narrow streets lined with 14th- to 16th-century buildings, some with vestiges of their former residents. The largest and most complete is the main synagogue in Carrer Marlet, 5. Consisting of two cellar-like rooms below street level, the space was virtually unknown, serving as a warehouse until 1995 when the building with its four floors added on top was put up for sale. It was acquired by the Asociación Call de Barcelona, which embarked on a meticulous renovation.