Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

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

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

A castle-inspired apartment building that has stood in Birmingham since 1927.

In 1911 this intersection was called "the heaviest corner in the South," an outlandish claim that only grew wilder over the years.

This fountain was commissioned by a mother grieving over her son's passing.

Monument to the cotton-destroying boll weevil.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

This 1,500-acre development hopes to be the Central Park of the South.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

This church also serves as a lighthouse complete with a beacon.

A small island dotted with old, historic Finnish buildings.

An abstract monument to a symphonic composer.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

An alien church provides much needed silence in the midst of a Finland shopping center.

A subterranean house of worship carved right out of the bedrock.

A volcanic crater that visitors can look inside.

This large round boulder is said to emit spiritual power, but it may just be magnets.

The ominously named cave is home to some remarkable ancient art.

This was once the center of the Birdman cult, and is now a World Heritage Site.