Pfalzgrafenstein Castle

Pfalzgrafenstein Castle, also known as 'the Pfalz', is a toll castle situated on Falkenau island in the Rhine River, adjacent to Kaub, Germany. The castle has a unique and picturesque setting, with a pentagonal tower and a defensive hexagonal wall. It was built in 1326/27 by King Ludwig of Bavaria to increase his toll revenue. The castle has never been destroyed and has withstood wars and natural onslaughts. It features a museum that reflects the conditions of the 14th century, with no modern amenities such as electricity or a lavatory. The castle is part of the Rhine Gorge, a World Heritage site