Decades before the scandal, this staircase on the river was a literal "water gate."

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

The rogue roots are gradually consuming some of the historic marble grave markers.

In what is rumored to be an intentional act of spite, this memorial almost completely obscures the nearby grave of a senior officer.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A building so large that it has its own weather.

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

The biggest drug trafficking passage between Mexico and the U.S.

This former ghost town high in the mountains of northern Mexico is now a pilgrimage site.

Past the hills and beyond the graveyard, this church feels extremely out of place.

These sailing ship-shaped chandeliers are believed to have been a gift inspired by faith.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

One of the largest underground systems runs under Canada's largest urban center.

This half-ton piece of the Alps sits at the base of the CN Tower.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The artwork commemorates the many ways 20th-century people perished while on the clock.

The giant birds honor two native North American species.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

This urban oasis is a marvelous meld of music and landscape architecture.