Yes, Jeronimos Monastery is worth visiting for its stunning Manueline architecture and historical significance. Consider the potential long lines, especially in peak season, and plan your visit to get tickets in advance or go later in the afternoon to avoid extensive waits. A visit to the adjacent Pastel de Nata bakery is a must-do after your tour. The monastery is a prominent example of Manueline architecture and a testament to Portugal's Golden Age of Discovery. Visitors are often amazed by the detailed stone carvings that acknowledge early Portuguese maritime explorations. It contains the tomb of Vasco da Gama, the famous explorer, and other notable Portuguese figures. The Church of Santa Maria, part of the monastery, can be visited for free and offers impressive views of the cloisters.