Australian Lake set aglow by Noctiluca Scintillans.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Largest collection of mounted dinosaur specimens in the world.

A face emerges from the landscape when seen from the air.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

The largest source of fossilized insects anywhere.

"World machine" built by an untrained Austrian farmer.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

A church of bones, decorated with 40,000 human skeletons.

Tiny communists hammer away on the Olomouc Astronomical Clock.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A landscape decorated with enormous skull sculptures.

A beautiful and classically designed villa, with an hourly infestation of monsters.

Limestone grottoes turns everyday objects into stone.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

Artist and musician Will Menter creates musical sculptures.

The house that took a plunge into the facade of a museum.

The Habsburgs' royal collections of art and wonders.