The Museu do Amanha, or Museum of Tomorrow, is a striking science museum on Rio’s revitalised waterfront, housed in a dramatic, futuristic building by architect Santiago Calatrava. Its ticketed, highly interactive exhibitions explore the big questions of sustainability, the environment and the future of humanity through immersive technology and thought-provoking displays. As much an architectural landmark as a museum, set beside the bay, it is a forward-looking cultural highlight and a fascinating, family-friendly contrast to the city’s natural and historic attractions.