As Americans who had been near the end of our trip and were tired of the art museums... this was one of the most educational and entertaining parts of our time in Lisbon. Our guide was extremely enthused that we were from the United States, and we got a free tour of the museum, that while is in need of a facelift and better signage, was a hidden gem. The artifacts from Africa, Brazil, China, and India are extremely interesting, and our conversation with the tour guide was a certain highlight. If you have fidgety kids this may not be for you, but if you want an interesting experience and to learn about Portugal's history of conquest, this is the place to be. Could not recommend enough, make sure to write in the book after you're done!