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

This Norman castle has been the scene of assassination plots, religious persecution, and Nazi conspiracies throughout its long history.

Beachcombers have been populating this museum with artifacts ranging from prehistoric to barely historic since the 1930's.

The ruins of a Roman fort lie in the shadows of an imposing medieval castle.

This strangely dressed taxidermy creature has a heartbreaking story.

The Origin of On the Origin of Species.

A magnificent menagerie of oddities, including taxidermy cryptids.

No one is sure what to do with this WWII shipwreck that sits at the bottom of the Thames, still loaded with tons of explosives.

The last resting place of the famous Native American princess is marked by a haunting monument.

This oak sculpture at the edge of a small woodland is nine feet tall and shrouded in mystery.

This medieval church is the only one in the world that features all Marc Chagall stained-glass windows.

This 2,700-year-old woman is the jewel of the Maidstone Museum's Egyptian collection.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

The grounds of this Jacobean estate contain one of the oldest mulberry trees in England.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The world’s largest magazine collection was born from a single shelf in a teen’s bedroom.

A monolithic monument in Greater London.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

This star-shaped artillery fort protected the mouth of the Thames from the 16th century to the Second World War.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

The largest whale museum in Europe allows visitors to walk among life-size giants.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.