The Calouste Gulbenkian Museum , also known simply as the Gulbenkian Museum, is a major encyclopedic art museum in Lisbon, Portugal, in the civil parish of Avenidas Novas. As part of the Calouste Gulbenkian Foundation, one of the wealthiest foundations in the world, the Gulbenkian Museum houses one of the largest private collections of art in the world. It encompasses the art of the world from antiquity forward, and was the private collection of a single man, oil magnate Calouste Gulbenkian.

More details: https://en.wikipedia.org/wiki/Calouste_Gulbenkian_Museum