National Museum (MAST)

Housed in the historic São Cristóvão Palace in northern Rio, this sprawling museum guides you through Brazil's natural history and cultural heritage with extensive fossil collections, indigenous artifacts, and meteorite displays that capture millions of years of Earth's story. The palace itself, set within lush gardens, is as much an attraction as its contents, offering a serene escape from the city's bustle while revealing the country's rich past. Expect detailed Egyptian mummies, Brazilian paleontology finds, and rotating exhibitions that bridge science and art in surprisingly engaging ways.