A mixed-use space for art, education, and history—inside a restored early-20th-century palace—the Museu de Arte do Rio (MAR) is a landmark in the city’s harbor zone. Walk from the top floor down, fifth to first, following an exhibition itinerary that touches on different elements that have left their mark on Rio’s rich history. At the end of the visit, go back upstairs for some refreshment at the excellent terrace restaurant that offers boffo views of Guanabara Bay. On the plaza out front, the Museu do Amanhã (Museum of Tomorrow), a science museum housed in a stunning building designed by architect Santiago Calatrava, can provide a visit that nicely pairs with your MAR expedition.