Wander through the Corridor of Wonders in these stunning limestone caverns.

This work of engineering is imbued with elegance and ingeniousness.

These bamboo and rope bridges cross the Nam Khan River for six months every year.

A 900-year-old village located in the highland of the Asir region that features historic architecture.

A state-of-the-art medical facility dedicated to treating beloved birds of prey.

One of 200 religious buildings recognized as a “culture monument.” 

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

The remains of St. Lucius of Chur were said to be kept in this crypt for several centuries.

If James Bond bungee-jumped off the side of a 720-foot dam, would you do it too?

In one of the world's smallest countries, a royal's personal winery is open to the public.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

A tower-like theater in the Swiss Alps built to withstand the high winds and avalanches of the mountain pass.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

This trail was once used to smuggle cigarettes, sugar, and other black market goods between Italy and Switzerland.

Artists made this mosque into a marvel of Ottoman baroque architecture.

As of 2022, the 124 rooms of Kosovo ski resort remain empty.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

An unusual resting place built into the hill with an amazing view of Lake Como.

These stairs feature the names of Zemun's most famous faces.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.

Legend says the only thing buried within this magnificent tomb was a dog.

A macabre anatomy museum tucked within an old Italian hospital.

A stately castle in the northern Italian countryside has been restored after years of neglect.