Prominent private museums and galleries include the Gulbenkian Museum (run by the Calouste Gulbenkian Foundation, one of the wealthiest foundations in the world), which houses one of the largest private collections of antiquaries and art in the world, the Berardo Collection Museum, which houses the private collection of Portuguese billionaire Joe Berardo, the Museum of Art, Architecture and Technology, and the Museum of the Orient. Other popular museums include the Electricity Museum, the Ephemeral Museum, the Museu da Água, and the Museu Benfica, among many others.