The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Possibly the world's largest coin stands just outside of a Canadian science center.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

This giant Canadian coin is a monument to the artist who created its iconic emblem.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

This massive subterranean fissure is known as the "underground Grand Canyon."

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

World's largest cave was only discovered in 1991, and now offers tours to the public.

Stunning examples of Russia's 18th-century wooden architecture.

The etchings on this narrow channel between two islands bear witness to maritime travelers who have passed through since the Middle Ages.

Finnish lake, and scene of an infamous murder mystery.

This remote sandstone cliff has one of the richest collections of Livonian petroglyph marks.

The only things left in this abandoned Latvian graveyard are a mysterious stone and a ghost story.

Mysterious heaps of stones dot these otherworldly woods.

The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

This behemoth bovine guards an Estonian town and is a memorial to the lost species.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

A wooden statue of an Estonian pagan god and King of the Setos stands atop a sacred hill.

Only a fragment of this 15th-century Dance of Death survives today.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

Two well-hidden huts let animal lovers spend the night among the bears, wolves, and other predators of the forest.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.