Built in 1180, the Santa María la Blanca is considered by some to be Europe’s oldest surviving synagogue. The exterior is bland and belies the visual treasure inside. Here you will find a large hall called a hypostyle. The five aisles are defined by white arches and columns with ornate capitals in a Mudéjar style. The centerpiece is a clamshell-shaped design. After the Jewish community left in 1411, it became a Catholic Church and renamed Saint Mary the White. The former synagogue is now a museum. Although it is devoid of exhibits or furniture, it is worth seeing the extraordinary architecture.