<br><p>Designation: Keystone<br>
Place: Von-Dalberg-Straße, at no. 10,  Ruppertsberg, administrative district Bad Dürkheim, Rhineland-Palatinate<br>
Date of construction: 1757<br></p>
Description: Keystone of the former gateway
<a href="//commons.wikimedia.org/wiki/User:F._Riedelio" title="User:F. Riedelio">Friedrich Haag</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>