Prague is home to several stunning castles, with 布拉格城堡 being the most famous and largest ancient castle complex in the world. Other notable castles include 维谢赫拉德, known for its historical significance and beautiful views of the Vltava River, and 卡尔施泰因城堡, a Gothic fortress located just outside the city. Each castle offers unique architecture, rich history, and picturesque surroundings.