Tall columns of volcanic basalt make up this improbable-seeming rock formation.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

Annual technopop celebration of peace and love.

Perhaps the tiniest sculpture in Saint Petersburg is a little bronze finch inspired by a song.

A gleaming white and undulating tower marks the border between Georgia and Turkey.

An abstract monument to a symphonic composer.