"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!”

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

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

Right next to departures—how convenient!

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

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

The romance of early commercial flight still fills this Art Deco destination.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

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

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

The world's longest known cave system.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

This award-winning men's bathroom was just too beautiful to not allow women to see.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

A theme park featuring a replica of Noah's Ark built to the measurements specified in the Bible.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A spherical "micro-nation" in the heart of Vienna.

An exquisite Baroque church in Vienna's old town.

The solemn exterior conceals an opulent interior of this 17th century church.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.