Tomar
Tomar, on the River Nabão, was the seat of the Knights Templar in Portugal during the Middle Ages. Above the town stands their fortified monastery, the Convento de Cristo, a UNESCO World Heritage site since 1983. Later, the Order of Christ, led by Henry the Navigator, was based here. The old town below is laid out in a grid pattern, featuring Praça da República, one of Portugal's oldest synagogues, and a park on a river island.