Museu Calouste Gulbenkian
45A Av. de Berna, Avenidas Novas
Calouste Gulbenkian was actually a British collector, but he lived a very international life, growing up in Turkey and traveling extensively during his career. In that context, it's not so surprising that his collection is housed in Lisbon, where he spent his final years. One of the largest in Europe, it claims significant holdings of Egyptian and Greco-Roman art, Armenian art, and impressionists like Manet, Degas, and Monet. There's also an impressive contemporary collection, built with funds from Gulbenkian's foundation, which was created with his fortune after his death. Exhibitions switch over frequently, and there's always a great mix of old and new on the walls, so it's entirely worthy of repeat visits.