Fodor's Expert Review Castelo de Estremoz
The former royal palace, an impressive hilltop fortress towering over the city, is the highlight of any visit to Estremoz (it now functions as a luxury pousada). The palace was built in the 13th century by Portugal's King Dom Dinis. It's named after his wife, Queen Isabel of Aragon, who died here in 1336. An explosion in 1698 destroyed much of the medieval structure except the Torre das Três Coroas (Tower of the Three Crowns), which you can still climb today for fantastic views of Estremoz and the surrounding countryside. The palace was restored after the ammunition blast and fire. The interior houses an impressive collection of 17th- and 18th-century artifacts and furniture.