Reussenstein
Once past the archway the world of Reussenstein opens up to you.  There are enclosed turrets as well as open air battlements with a spectacular view of the countryside.

The view on the right is from one of the lower levels looking up at the inner ward and keep. 

Below left, taking the walkways toward the inner reaches of the castle.  As can be seen, some of the castle is built directly into the living rock.  While the castle has had some restoration work, much of the structure is at least 600+ years old.
Above right, a view within the inner ward itself.  The restoration and reconstruction can be seen around some of the windows.  However, as seen in the photo at left, some of the authentic architecture can still be seen.
There are several entrances to enclosed or underground sections of the castle, and there are indications that there are other areas beneath the castle yet to be discovered.  To the right, one of the entrances to an enclosed turret.  Below left, within one of the lower turrets.  Note the arched roof above.  While having received a modern-era treatment of cement paste, most ot this section is authentic and hundreds of years old designed around Romanesque architectural concept.

Below right, a view from the inner ward down to the outer turrets and battlements.  Below the castle is the Neidlingen valley.

Inset below:  another entrance to an enclosed turret.  The reconstruction and repair of the walls can be clearly seen, as the top was once enclosed as well.