What looks to be an idyllic mini castle seamlessly floating on the Tagus riverfront was originally a fort that served to protect Lisbon's port ... Visitors can go inside and explore the interiors ...

The waterfront Belém is a historic neighborhood that houses some of Lisbon's most important monuments ... the Jerónimos Monastery, the Belém Tower, the Discoveries Monument, the Belém ...

Day 1: Downtown Lisbon, Fado Music Experience Day 2: Belem Tower, Monument of Discoveries ... off the tram at the cathedral if you want to go inside and explore the beautiful interior.