If you want to take a real journey back in time while in Lisbon, discover the Museu Geológico in the former convent of Jesus. Built over 150 years ago, its 18th-century character and exhibition structure have remained unchanged over the decades and is thus considered the “museum of museums”. Besides its very rich geological and archaeological exhibits, which recount the research and discoveries made in Portugal over the years, the museum itself is a journey into the past. The permanent exhibition consists of four rooms: palaeontology and stratigraphy; the palaeontology of vertebrates; pre-historical archaeology; and mineralogy. Enter modern Bairro Alto and end up examining the composition of Earth millions of years ago.