This massive, ancient stone was disassembled and then put back together again.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

The only tennis court that falls under the jurisdiction of the central bank.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

The collection of signage remembers the midcentury pushback against the new neon light.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

The famous aviator's final resting place is a study in natural beauty.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This center in the Rwandan capital supports women’s livelihoods while educating visitors about traditional cooking, craft making, and more.

This quirky countryside store is known for the goats that hang out and eat the grass on its roof.

Model Trains and Much More in Hamburg.

A miniature representation of Canadian cities and landmarks in incredible—and sometimes hilarious—detail.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

This monument depicts a harrowing event involving an escaped polar bear.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

A six-ton wedding present for the King of the Scots.