An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Cat art as far as the eye can see.

Museum preserving torture methods from the past.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A collection of items from a way of life that no longer exists.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

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

This 11th-century structure is one of the oldest churches in Romania.

This bone-filled cave got its name after they found 140 bear skeletons inside.

A medieval church built up to defend its village.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Religious structure known for its sculpted details.

A Romanian church built from one single oak.

Romania's triumphal arch looks out over Bucharest.

17th century palace once a meeting place for politicians.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

The Natural History Museum that time forgot.

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

Gigantic Romanian salt mines used to heal respiratory conditions.

Romania's only crater lake with water as pure as if distilled.

This eccentric folly house was designed by Romanian thinker Bogdan-Petriceicu Hasdeu, with a helping hand from his deceased daughter's spirit.

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