This spacious Baroque basilica has an unusually restrained marble interior and offers fine views of the city from its zimbório (dome). It was built at the end of the 18th century under the command of Queen Maria I to fulfill a religious promise she made in praying (ultimately successfully) for a male heir. Just across the road is the leafy Jardim da Estrela. Stroll the shaded paths and then pull up a chair in the café for a drink or a snack. Estrela is a short walk west of Largo do Rato, where the Metro's yellow line terminates. You can also take the scenic route on Tram 28 from Praça Luís de Camões in the Chiado neighborhood; you'll pass through the São Bento district, dominated by Portugal's grand parliament building (yet another former monastery) on the way.
Praça da Estrela, Lisbon, 1200-667, Portugal