The octagonal wooden gazebo in Swiss style was built in 1997 according to the design of ing. arch. František Vondráček in the park in front of the Richmond Hotel. The gazebo bears the name of the original owner of the sanatorium Alois Klein. The 14th Karlovy Vary mineral spring Štěpánka springs directly in the gazebo.
The original reservoir, dating from 1884, has been extinguished over time. In 1993, the spring was captured by a new probe near the Parkhotel Richmond. The spring is not taken as part of a drinking cure.