The world's tallest palm trees look like the whimsical kind of plant you'd find in a Dr. Seuss story.

Reaching the "Church in the Sky" requires scaling the cliff face of a sandstone pinnacle with a 650-foot drop.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

Road signs in Namibia mark the location of one of the five major circles of latitude.

A public display of prehistoric space rocks is named for the Namibian village where they were found.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

Mummified monks and the accidentally interred, in a 17th-century crypt.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

Quite simply the largest tree in the world (by volume).

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

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

Something's watching you.

After sunset the heart of Zanzibar's historic Stone Town neighborhood transforms into a culinary playground.

Once thought to be the Garden of Eden it holds a holy footprint claimed to belong to Adam, Buddha and Shiva.

Human ancestor’s 3.6 million year-old footprints.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

Light still pours into the ruins of this ancient Islamic observatory.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

The Avenue of Mausolea is a series of grand palatial tombs.

The longest living non-clonal organisms on Earth.