This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

Symbolic attempt to overcome the issues of life.

This NASA test station is home to some of the world’s largest and most powerful space environment simulation facilities.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

An office built to look like a giant basket.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

There are more than 4 million bricks inside this unofficial Lego museum in a former middle school.

An art deco ice cream shop covered in vintage train station tiles.

Rare recess caves fill this unbelievably beautiful Ohio park.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

Where beautiful signs live on forever.

A glittering Thai Buddhist temple in suburban Pennsylvania.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

This collection honors the iconic, and proudly American lighter that just won't quit.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

These disused steel furnaces are now haunting ruins that may one day be a national park.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

There aren't too many operational funiculars around, but Pittsburgh has two!

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

This Old Testament garden features 100 plants from biblical times.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.