The Cathedral of Aveiro occupies the former Convent of Jesus, a Dominican convent founded in 1461. The church itself is a fine example of Gothic-Manueline architecture, with an elaborately carved facade added in the 18th century. The interior is notable for its 18th-century azulejo panels — blue-and-white tile compositions covering the nave walls — and the gilded wood of the chapels, which represent the height of Portuguese Baroque woodworking.
Adjacent to the church, the Museu de Aveiro/Santa Joana occupies the former convent and holds the remains of Princess Joana of Portugal (Joana la Princesa), who spent her final years here as a nun. Her tomb is a masterpiece of Baroque sculpture and well worth the entrance fee to the museum. The museum also houses religious paintings, sculpture, and azulejos from the region.