Katskhi Pillar, Georgia
A 130-foot-tall monolith of natural limestone called the Katskhi pillar is found close to the Georgian town of Chiatura. The pillar has a building on top of it that was constructed in the ninth or tenth centuries by a hermit. Maksim Qavtaradze, a Georgian Orthodox monk, currently lives there. Only twice a week does Qavtaradze leave his pillar to go to the monastery below and fetch food; he must descend the rock wall using a ladder.

Katskhi Pillar, Georgia
Lichtenstein Castle, Germany
Although Lichtenstein Castle is not well-known outside of Germany, it is referred to as the fantasy castle in Baden Gutenberg. The current building, which was finished in 1842, was originally constructed on top of the ruins of a previous castle as a hunting lodge. It was constructed in an unfocused pseudo-medieval style. The exterior wall of the castle is constructed directly on the cliff’s edge, which is the most outstanding aspect of the site. The dizzying vista is enough to make even the most courageous of travelers feel uneasy.

Lichtenstein Castle, Germany