The taxidermied remains of a once-great parrot.

Dictionary Johnson’s favorite feline.

Murals of the wild parties once held on the frozen River Thames.

A long-disputed lighthouse built on the wrong side of a Finnish/Swedish island.

A botched 18th-century canal silenced one of Sweden's most magnificent waterfalls.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

The last bastion of Roman presence north of the Alps looms over a German town.

Once the nail factory shut its doors, this Swedish factory town was abandoned, leaving behind a modern ghost town.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

This wonky bit of historical taxidermy is experiencing a second life online.

This abandoned airplane hanger is said to have once been a top secret launch facility.

This abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

The dome-shaped reservoir of this old water tower produces unique acoustic effects.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

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

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

A secret Virgin Mary tucked away on a Brazilian beach.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

Pigduck of Turku.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

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

According to legend, this boat-shaped henge is built over the grave of a mythic king.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.