São Jorge Castle is a historic castle located in the Portuguese capital city of Lisbon. It is situated on a hilltop overlooking the Tagus River and the city. The castle is a popular tourist attraction and a must-visit place for anyone interested in history and architecture.

The castle dates back to the 11th century when it was constructed by the Moors during their occupation of Portugal. The castle played an important role in the country's history and was a key defense against foreign invaders. It has undergone several renovations and expansions over the years, with the current structure largely dating back to the 14th century.

Visitors to the castle can explore the various towers, walls, and gardens. The castle's keep is the highest point of the castle, offering panoramic views of the surrounding area. The castle also has a small archaeological site, where visitors can see the remains of a former palace and Moorish neighborhood.

São Jorge Castle is located in the Alfama district of Lisbon and is easily accessible by public transport. The castle is open to visitors every day, with extended hours during the summer months. It is a popular destination for tourists and locals alike and a great place to learn more about Lisbon's rich history and culture.