Discover the Cathedral of Santa María and its impressive stained glass windows, a jewel of world Gothic. The Pantheon of the Kings of Leon in the Collegiate Church of San Isidoro is considered the 'Sistine Chapel' of the Romanesque. Admire the beauty of the Plateresque layout of San Marcos and its cloisters, as well as Antonio Gaudí's Botines Building-Museum. Tour the Historic Center, with medieval traces, and its Roman walls and vestiges.