This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Some of the smallest works of art in existence.

Extensive Orthodox icon collection in Andorra.

Nestled at the southern end of the Bay of Vlore in Albania resides ruins that contain Illyrian, Greek, and Roman influences.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

Explore a traditional Albanian dwelling that pays tribute to the region's rich history.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

The first green space constructed on an elevated viaduct.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

Longest canal tunnel in the world, abandoned in the 1960s.

The eclectic observatory castle of a 19th-century astronomer and explorer.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

Personal garden filled with mosaics made of recycled garbage.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

The world's most famous cheese caves.

One man's desire to transcend art led to the construction of this outsider chapel.

An atmospheric, medieval-themed book store hides in a 13th-century underground space.

One of the world's most complex timepieces.