19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

Mansion and shopping center used in the 1975 film "The Stepford Wives."

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

A castle inspired by medieval architecture is hidden in the woods of Connecticut.

A famed data visualizer's personal sculpture garden is a landscape of modern and megalithic wonders.

A wunderkammer hidden on the top floor of the Hartford statehouse.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

A surprisingly large and sturdy ruin on the outskirts of a remote village.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

The final resting place of many of Germany's most famous communists.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

No need to strap in for a “ride” on this walkable roller coaster.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

A surreal museum of extraordinary industrial objects.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

There is a mouldering Jewish cemetery hidden away in the capital of Moldova.

No one knows who built this strange cave of worship or exactly why.

A Romanian church built from one single oak.

This enormous abandoned prison was once dubbed the "Bastille of Romania."