See replicas of Europe's most famous cave paintings and even some of the animals that feature in the art.

These primitive rock paintings include a very beloved depiction of a woolly mammoth.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

The world's longest known cave system.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

This Javanese-Hindu temple from the 15th century is unmissable for anyone with even a passing interest in erotic art.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

15,000 year old bison sculptures.

Early Medieval stones sit on display at the beautiful Govan Old Church in Glasgow.

Dozens of snakes are housed and worshipped within the walls of this Vodun temple.

The enigmatic skull gazes out over the ruins of a once-great Mayan city.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

Hidden in the hills is a mysterious stone structure, known only to a few.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

An unrealized dream to wirelessly electrify the entire Earth.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

Eulogizing an unknown man's unusual demise.

A gated cross stands on the site where an Irish revolutionary met his end.