TravellingTom78's Lisbon, Portugal
Torre de Belem
Avenida Brasilia - Belem
On a clear day there are excellent views from the top of the tower, but inside there isn't much else...
Oceanario de Lisboa
Esplanada D. Carlos I - Doca dos Olivais
An excellent aquarium, lots to see, easily fill an afternoon, particularly good if the weather isn't...