Large Hadron Collider and the Birthplace of World Wide Web.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

A fortified city, home to a remaining population of five families

One of the most spectacular canyons in the world.

God's Saharan sandbox of wrath.

A mythical garden that once grew the golden apples of wisdom is said to have existed in this ancient Moroccan city.

Single runway interrupted by a busy road that cuts across its middle.

Held in a fort that once stood for colonization of the area, this museum now tells the history of its indigenous people.

Pompeii's less famous neighbor is still revealing her secrets.

This subterranean necropolis holds three floors of antler-dug grave caves.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

Ancient mysterious ruts carved in the bedrock.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The ancient latrines of the Greeks, in all their public glory.

Roman ruins top white travertine terraces formed by ancient hot springs.

This legendary city has been a tourist attraction for centuries.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

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

A former imperial sea-fortress and Soviet prison.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.