Stretching for 22 miles, the world's longest tree-lined avenue dates back to the early 17th-century.

The largest collection of model trains in the world is actually run using full-size locomotive technology.

This historical theme park celebrates all things noodle.

A semi-abandoned replica of Prince Edward Island's Avonlea—in Japan.

This cavern was used as a hidden hospital and safe house during the Vietnam War.

This Art Deco airport was once deemed “the air hub of the Americas.”

An abandoned marine theme park has created a difficult experiment in dolphin rewilding.

There's an exclusive Beefeaters pub hidden in the Tower of London.

This unique architectural wonder is home to luxury apartments.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Eritrea's futuristic gas station is a nod to Italy's fascist history.

Take a ride back in time with a steam locomotive trip through Eritrea’s mountainous countryside.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

A hidden three-foot-wide house separates these two regal churches.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

A shockingly detailed small scale recreation of the temples of Abu Simbel.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

This Kyoto Starbucks takes coffee drinkers back in time.

An abandoned bus station transformed into a museum dedicated to the history of Greyhound Lines, in the place where it all began.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Ever wanted to can Spam?

20,000 pieces in a Frank Gehry-designed building.

The famed architect designed this Minnesota gas station of the future with a lookout tower.