This museum is one of the best ones in Lisbon. It was built in 1960 and its collection ranges from tapestries, Persian rugs, Chinese porcelain to Rembrandt and Rubens.
For art lovers it is possible to spend the whole afternoon without being bored. It is not as big and grandiose as other museums in Europe but it is exquisite. I was fascinated by the rugs, vases, and illustrated bibles from Armenia and surroundings.
To get there, take the red or blue line to Sao Sebastiao (both red and blue) or Praca de Espanha (only blue line). The entrance costs 4 euros per person and it is worth every dime.