An eccentric company offers eccentric millionaires the opportunity to have spaceflight-related experiences.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

The span is crooked and made from two older recycled bridges.

Go take a picture with the inventor of the daguerreotype photographic process.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

"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!”

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

A public art jibe at one of the United States’ oldest and longest-serving senators.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

A secret greenspace hides atop a Capitol parking garage.

Where pardoned turkeys once spent their all-too-brief final days.

It was once the base for a series of domestic terror attacks.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

When it comes to handsignals (and colonialism) rock always beats scissors.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Was there a small "backpack nuke" hidden in the attic? JFK apparently thought so.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

A spectacular tribute to statesman and philanthropist Andrew Mellon.

A much-maligned monument to teetotalism.

The fountains of the U.S. Navy Memorial are annually salted with water from the Seven Seas as part of a nautical ritual.

This unassuming passageway played a key role in one of the most important events in U.S. history.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.