The Jerónimos Monastery in Lisbon is a stunning UNESCO World Heritage site, showcasing Portugal's Age of Discovery through exquisite Manueline architecture, featuring maritime symbols like ropes and armillary spheres carved into its honey-colored stone, celebrating Vasco da Gama's voyage to India, and housing the tombs of explorers like Da Gama and poet Luís de Camões within its church and grand cloisters.