This landmark house of worship, built in 1887, was once the center of Jewish life, before falling into squalor in the 1920s. Left to rot, the synagogue was restored following a 20-year-long, $20-million restoration that was completed in 2007, and it now shines with original splendor. Museum admission includes a tour of the synagogue, which departs hourly, with the last one starting at 4pm.