In the past, a restaurant for excursionists and the "U Tří křížů" (Three Crosses) Café had stood on the plane of the former Rudolfova výšina (Rudolf's Height) below the Three Crosses. In the 19th century, the site belonged among the most frequently visited outing destinations of the spa guests. The original Camera Obscura (Dark Chamber) arbour where pictures of the landscape were projected on the wall of the dark chamber used to stand in the restaurant garden. The original arbour had fallen victim to a devastating overnight windstorm in 1990. The present-day wooden lookout arbour was built on its site 1997 thanks to the initiative aimed at the restoration and revival of vanished or dilapidated structures in the spa woods.
