The Prague castle atop the hill is a must visit site when in Prague. It towers over the city and can be seen from most places around the river. It also houses the church, the castle, the fort, the President residence and the Golden lane. The change of guards ceremony can also be seen in the mornings. The Golden lane has an exhibition of the old houses of the palace clergy and a wide range of armory and weapons of the medieval ages on display. The highlight is the torture room and the room where the weapons were actually made. The Church is huge and the way its been maintained over the years is amazing. The castle has 4 courtyards in all and all of them are covered on foot which is quite a walk.