Ruin "Nollig" near Lorch
Probably not a castle ruin but a habitable watch tower, built in the 14th century as a 3-storied half-timbered building that was surrounded later with thick walls. Until today it is highly controversial if the Nollig belonged to the former fortification of Lorch.
Today it is private property and so can not be visited.
You will pass the Nollig on your hiking tour between Lorch and Kaub.

Rüdesheim - Lorch
Distance: ca. 21 km
Time: 4-6 hours
Altitude difference about 660 m
Highlights in Ruedesheim: Drosselgasse, Rheingauer Weinmuseum Brömser Burg, cable car to the Niederwalddenkmal, christmasmarket, Abbey St. Hildegard, Asbach Wine Distillery with Visitors Center, midieval torture museum, Siegfrieds Mechanisches Musikkabinett ...
From Rüdesheim we follow the paths through the vineyards up to the Niederwalddenkmal (monument of Germania) with its Adlerwarte (view point). If you prefer you can go by cable car to the monument...

Lorch - Kaub
Distance: ca. 17 km
Time: 3 - 5 hours
Altitude difference about 430 m
Highlights in Lorch: Kunst- und Heimatmuseum, church of St. Martin with its famous carved altar and organ, the Hilchenhaus and Wispertal...