[2] The main entrance to the castle complex is a tall square clock or gate tower (~1300 AD) opposite the hotel.

A connecting path joins the clock tower to the remains of the living quarters of the landgraves of Hesse-Darmstadt (the so-called Darmstadt Building).

The cellar was renovated in 1997 and restored to its original condition and now serves as a meeting place for concerts, theater performances, and other shows.

This was the centre of the medieval castle which contained a bakery, pharmacy, garden, brewery, well, and livestock — which would have allowed it to withstand an extended siege.

[4] In June 2019, a claim made by Georg Friedrich, Prince of Prussia, that Rheinfels Castle be returned to the Hohenzollern family was dismissed by a court.

In the future, St. Goar will work closely with the non-profit Princess Kira of Prussia Foundation, which supports socially disadvantaged young people.