2 Best Sights in Belém, Lisbon

Portugal's oldest botanical garden—laid out in 1768 by the Italian botanist Domenico Vandelli (1735–1816)—is a relaxing place to spend an hour or so. Baroque fountains and stairways, Renaissance-style terraced slopes, and meandering peacocks create a sense of splendor, and the Scented Garden adds aromatic appeal.

Steps from Belém’s Manueline monastery, this tropical botanical garden offers shady respite from the heat and the crowds outside. Towering palm trees provide a grand entrance to a flower-filled space that was created in 1906 as the Colonial Garden, housing some 600 species from Portugal’s tropical and subtropical former colonies. There are some grand colonial-style buildings, although most are closed to the public, and resident peacocks stroll amid the flowers and plants. Entrance is free on Sunday from 10 am to 1 pm.