This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Thousand-year-old trees tower within one of the world's only inland temperate rainforests.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

This natural wonder is disappearing at an alarming rate.

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

The site of a strange super top-secret military experiment during WWII on a remote Canadian lake.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The anatomical-pathological collection of a man who changed surgery.

A naturally mummified 2,000-year-old man.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

One part local history, 99 parts gruesome haunted house.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Cavernous opening completely encased in Karst limestone.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

The subtle interplay of fire and water is hard to ignore at this remote Jamaican spring.

This remote 4,500 year old medicine wheel is one of the last of its kind.

An outcropping plays host to the largest collection of pre-contact petroglyphs in Saskatchewan.