One man's grief over the national tragedy has manifested in a pod of homemade whales on his front lawn.

Electrical pylon in the shape of Disney's beloved mouse.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This elaborate towering structure was once famed for its revolutionary height.

Macabre astrological automaton clock dating to the late 1400s.

An overlooked memorial honoring the local Washington residents who died in World War I.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

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

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

A winding path built in secret on the edge of the continent.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A playing field for a popular French past time can be found tucked away in a quiet corner of Golden Gate Park.

Golden Gate Park's historic collection of plants.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.