Castle Ehrenfels
Above the infamous Binger Loch ("Bingen Hole," dangerous shallows in the Rhine), situated in the vineyards between Ruedesheim and Assmannshausen, built from 1208-19 by the brothers Wernherr and Philipp von Bolanden. Together with the Mouseturm ("Mouse Tower"), an outpost located opposite, in the middle of the river, it served as both a toll station and a shelter. The cathedral of Mainz became the proprietor of the fortress in 1370. In 1688, Ehrenfels fortress was destroyed by the French during the Palatinate war of succession. Today, it is considered to be one of the most beautiful and picturesque castle ruins on the Rhine.

Boosenburg / Oberburg
Romanesque keep, next to the Broemserburg. The shape of the building alludes to 9th-century origins. Standing 38 meters high, the tower of the Boosenburg is the town's tallest building. Nestled into these walls, which are up to three meters thick, is a castle-like residence. The entire complex is privately owned and, unfortunately, not open to the public.

Brömserburg / Niederburg
From the early 10th to the early 19th centuries it was the property of the archbishops of Mainz. They converted the old fortress into a residence in the 12th century. Originally, it was right on the bank of the Rhine, surrounded by water. Its more than two-meter-thick walls withstood all offensives. Only the southeastern portion was destroyed by the Duke of Longville. A mine path to the keep bears witness to its invincibility. After being secularized in 1803, the castle had several owners until the town of Ruedesheim purchased it in 1941. Today, it is the home of the vast collections that comprise the Rheingau wine museum. Historic wine presses from several centuries are displayed in the garden.