If you would rather see Lisbon with a guide, HappyToVisit ranks the best-reviewed Lisbon tours, and the official Visit Lisboa and Visit Portugal sites cover hours and access.
Lisbon: Tour of Belem and Jerónimos Monastery

This tour is a tight loop through Belém’s most important sights, paced so you get meaning without a full day commitment. I like that it starts with the human story behind the neighborhood, then quickly turns into big visual payoffs…












