Places wasik Wants to Go

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

A hidden art gallery in an abandoned Warsaw fort.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

Beautifully carved tombstones fill this unmarked graveyard, uniquely situated near the village's famous stone wine cellars.

A hidden stream deep in the mountains creates one of the largest tufa waterfalls in Serbia.

A maze of underground tunnels beneath one of the most beautiful forts in Serbia.

The interior of this Serbian royal family's mausoleum is covered with exquisite mosaics.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

A burial vault located under Tiber Island in the middle of the Italian capital.

A neglected spomenik overlooking the beautiful Kopaonik Mountains.

Once a beautiful palace, this structure is now known as the ''museum of destruction."

Curious carved stones and bird-like wings are a symbol of Serbian resilience and freedom on the site of a WWII massacre.

An eerie, protected forest of old-growth oak trees, many of which are now dead.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

A Serbian church lit by chandeliers made of weapons.

A forgotten monument to Yugoslavian freedom.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

This unique structure allowed boats to bypass underwater mine barriers in the channel to enter the harbor.

This abandoned gun tower was built to defend the River Thames from a French naval attack.