Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

Ukraine's oldest operating pharmacy now offers guests a fascinating walk through apothecary history.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

This house's itty bitty size means no humans allowed.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Hundreds of antiquated typewriters and office machinery show the technological evolution of business.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

A little church on a tiny island looks like something from a fairy tale.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

This collection of French root art looks like an indoor fairy wonderland.

A comprehensive collection of Pez dispensers.

Tucked away inside a historic Savannah hotel is a hundred-year history presented in ladies' lids.

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

Its buzzing collection honors vibrator history.

Double spiral staircases are not unheard of, but they are very rare.