Explore and absorb all the major classic sights of Lisbon with the City Sightseeing Traditional Tour double-decker buses. Mosteiro dos Jerónimos, Castelo de São Jorge and Museu Nacional de Arte Antiga are essential must-sees for anyone visiting Lisbon! With City Sightseeing Hop Off Hop On tours, you’ll uncover the heart of the city, set at your own pace and convenience. Buses are only ever minutes away. These purpose designed and professional tours guide you to gain the most from your city experience. We also recommend the following experiences: Tours of Lisbon & Nearby Towns, KidZania Lisboa Tickets.