St. George's Castle (Castelo de Sao Jorge)

Recent visitors were pleased with their experience at St. George's Castle, though some mention the area's (the Alfama) steep hills might not be for everyone. One TripAdvisor user says this attraction was not for children, as there are crumbling walls and towering heights that aren't properly secured.

It is a great spot for history lovers, however. Castelo de São Jorge perches atop Lisbon's highest hill, built by the Moors who were later driven from the city and their ancestors' handiwork. Take some time to appreciate their artistry, and remember to bring your camera. There's a moderate fee to enter; you might also want to budget out some euros for the souvenir shops and restaurants that surround St. George's Castle outer walls.