Belém Tower, a UNESCO World Heritage site and iconic symbol of Lisbon's Age of Discoveries, offers an engaging visit typically lasting 1 to 1.5 hours. Entry costs around €6-€8 for adults, with combination tickets often available for nearby attractions like Jerónimos Monastery, providing better value. While ground floor accessibility is generally good, the tower's upper levels are accessed via narrow, winding stairs, making them challenging for visitors with mobility issues as there is no elevator. The site can be explored effectively solo, with information panels and audio guides available, but guided tours offer enhanced historical context. It is open year-round, usually closed on Mondays and major holidays; arriving early in the day, especially during the peak summer season (June-August), is highly recommended to avoid long queues. Located on the Tagus River, it is best visited alongside other monuments in the Belém district.