This crumbling 14th century chapel became so unstable the roofing apparently collapsed during a wedding ceremony, narrowly missing the curate's head.

Local legend says this unusual chimney is actually a broken-hearted man's tomb.

These ruins of Francis Bacon's once-magnificent manor are hidden in the English countryside.

A house of bones — but nobody is quite sure to whom they belong.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

The ruins of a 17th-century lodge on a grand estate are being slowly restored to their former glory.

The intended purpose of this unfinished Elizabethan building remains a mystery.

A working farm turned into a museum dedicated to the world's most unbelievably tiny cars.

The half-finished remains of what would have been Scotland’s biggest piece of landscape art.

No one knows the origin of this creepy little stone man with an oversized phallus.

A line of disused military bunkers built to defend against Nazi invasion lies hidden on the outskirts of the city.

Legends surround an ancient tree trunk riddled with nails for good luck.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

A non-stop elevator ride in Vienna's city hall.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The resting place for anonymous victims of the Danube's dark waters.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

The final resting place for the remains of 143 Habsburg royalty.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

This former insane asylum now holds a pathological anatomy museum.

One of the best collections of wax anatomical models in the world.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.