The most famous attraction in the Belem district of Lisbon must-have: Belm Tower. Belem Tower, one of the world's cultural heritages, has a very important historical and strategic significance in the history of Lisbon, and it has also been named one of Portugal's seven wonders. Come here early in the morning, there are already many tourists around Belm Tower, sitting on the surrounding lawns and steps in twos and threes, and the Belem Tower has already started long queues, waiting to enter. Belm Tower was built between 1514 and 1520 during Manuel I. It was first used to defend the port of Belm. Now there are many barrels that have been preserved in the past. Cultural relics of the 16th century. Later, the Belm Tower gradually transformed into a beacon, the starting point for Portuguese navigators to explore the unknown ocean at that time. Later, it became a jail that was held in custody. You can feel the gloomy atmosphere of the dungeon when you enter the tower. There are several lookout windows and balconies around the tower. Although the history is long, the walls made of stone are still well preserved. The exquisite craftsmanship of the year is clearly visible. Entering the tower requires a wooden bridge, and the Belem Tower at the high tide seems to float above the sea. Belm Tower was officially recognized as a World Cultural Heritage by the International UNESCO in 1983. In 2007, it was named one of the Seven Wonders of Portugal and has a history of more than 500 years. Although it is called a tower, it is more like a fortress. It is guarded on the coast of Lisbon and witnesses the glory and glory of Lisbon.