Located in a hill on the Danube River, the Bratislava Castle in the Slovak capital is a square building. The Bratislava Castle was originally an ancient Roman castle, and the oldest part is now rebuilt in the 13th century. The new part is Maria Teresa built for her most beloved daughter, Christina. Now, there is a historical museum and a music museum in the castle. and the most recommended is due to the high terrain of the castle, overlooking the Danube and the entire city on the hills outside the main building.