A perfect turquoise lake colored with glacier dust.

Home to some of the world’s darkest skies, this project blends ancient Māori culture with world-class astro tourism.

This charming stone church on the shore of Lake Tekapo is an icon in astrophotography.

Towering earthen formations that rise straight out of the ground in New Zealand .

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

A storybook European village in Berkeley.

An unusual snaking bank of boulders caused by longshore drift.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

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

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

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

Ancient mysterious ruts carved in the bedrock.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

The world's largest reflecting pool is just two centimeters deep.

The eclectic observatory castle of a 19th-century astronomer and explorer.

This ancient market is often referred to as the oldest shopping mall in the world.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.