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

Religious structure known for its sculpted details.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

A curious cave church carved into the face of a cliff.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

This hidden art nouveau gem was designed by an architect in search of a national style.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A fake Transylvanian castle houses a cathedral of antlers.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Budapest's Communist-era statues, banished to the suburbs.

A Hungarian pharmacy museum with a box full of mummy powder.

A marvel of technology a century ago, this disused power station now offers a lovely glimpse into the industrial design of the past.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Once the home of a hermetic monk, this cave now houses a small church.

Museum dedicated to the terror regimes of Hungary.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

This tiny town features a tiny town that acts as a 3D snapshot of the town during the 1950s.

The mouldering remains of a disgraced British children's icon are hidden in the brush of a public park.

This tangled English forest looks like something right out of a fairytale.