Only hotel where you can legally launder money.

Early prototype for Frank Lloyd Wright's Guggenheim.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

In this quiet village, a blue plaque marks the spot where the famous fictional detective retired.

This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

There must be a pun in this haystack somewhere...

The world's largest fire hydrant is supposedly tornado-proof.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

A bizarre house filled with an astounding array of collections.

This cave holds a surprisingly colorful variety of geological oddities.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

A place to eat for on-the-run agents and espionage enthusiasts.

Statue dedicated to the star of an old television show.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

Art deco landmark on the outskirts of Washington, D.C.

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

The house where John Wilkes Booth conspired with his co-conspirators.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

This grand gothic brewery has been pumping out suds for over a hundred years.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

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

One of England's most famous churches hides a pair of little known architectural treasures.