https://www.openstreetmap.org/way/185586738 Street view aerial shot: https://goo.gl/maps/nycfD98yFDfyYdNu6
Visit seems to be by tour only, so gather as much info about languages available on the day when planning a visit. On Fridays and Saturdays, a “Knights‘ meal“ feast can be booked.
The Reichsburg Cochem had its first documentary mention in 1130. In 1151, it was occupied by King Konrad III, who declared it an Imperial castle. In 1688, the castle was overrun by French King Louis XIV's troops in the course of the Nine Years' War (known in Germany as the Pfälzischer Erbfolgekrieg, or War of the Palatine Succession), and the following year, they destroyed it. The castle complex long lay in ruins before in 1868 it was bought by the Berlin businessman Louis Fréderic Jacques Ravené for 300 Goldmark and then reconstructed in the Gothic Revival style. Since 1978 it has been owned by the town of Cochem and is administered by a company named Reichsburg GmbH.
I've actually been there, not inside but in Cochem and surrounding area. From the hills I remember it looking more like this, which is still really cool:
Majestic views....thank you!