Lithuania's outdoor sculpture trail of wooden folk art.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

The mark of the Devil's horns on a marble column in Milan.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

A Milanese café entirely designed by the American director Wes Anderson.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A dreamlike medieval church dug into the tuff rock, with unusual carvings and possible traces of the Templar knights.

Secret refuge and museum of the Duke of Florence.

An enigmatic modern marker left next to a historic Roman site.

Famously misunderstood wonder of the ancient world

This foolish Victorian sea fort was converted to a deluxe hotel.

A petite castle folly in the English countryside.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

A remarkable medieval structure born from a 14th-century disaster.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

A house of bones — but nobody is quite sure to whom they belong.

This ruined folly was originally built to honor a failed American state that would have become "Westsylvania."

A reportedly haunted 14th century church is curiously facing the “wrong direction.”

Surreal riveted sea forts once protected the Kent shores from German attack.