A bit off the beaten path, this structure is an UNESCO world heritage site, originally built by Prussian monarch Friedrich Wilhelm IV in the mid 19th century as a viewing platform of the surrounding area. The architecture has Roman and Greek influences and is reminiscent of an ancient Roman temple, with the immediate grounds laid out in an English garden format.
During WWII the building fell into disrepair and the subsequently was renovated starting the mid-1990s to mid 2000. It is now open to the public via ticketed self-tour, timed tours (seasonal), and special events for both community and private functions.
When I went on a Saturday morning the grounds were fairly empty, maybe a dozen or so other visitors. You could spend 20-30 min or more here. Tickets were €8 for a regular adult price, €6 if I recall correctly, including the discount if you have separately booked the Berlin Welcomecard or the Sansoucci+ package though the ticket is not included in that package. Bathrooms are available though parking is not, it's recommended to take public transportation and then walk. This can be anywhere from a 15-30 minute walk depending on where you're coming from. I came from the direction of Schloß Cecilienhof and that was about 25 minutes with about 10-15 minutes of uphill. Coming from the north or west the walk is shorter from the main road though still takes you along a path in the park/woods. read more