Fodor's Expert Review Sinagoga
A Jewish community is believed to have existed in Castelo de Vide since the 12th century, and reached its peak in the 15th century, bolstered by Jews fleeing the Inquisition in neighboring Spain. This tiny synagogue is believed to be from the late 13th century. There's a small sign outside, but otherwise you might miss it—it looks exactly like all the other row houses. The synagogue was adapted from existing buildings, with two separate prayer rooms for men and women. Although its exact construction year is unknown, this is thought to be one of the oldest in all of Portugal.