A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

A stray meteor left this picturesque hole in the Australian outback.

This abandoned horse racing track was an exercise in hubris from its inception.

The unusual burial monument of Arizona's first governor.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

A towering bronze statue memorializes the founding father of postwar American conservatism.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

Elaborate tile work in this railway station tells the story of Portugal.

Ancient catacombs form the foundation for this Rococo orgy of a church.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The corpse bride of Portugal.

An offbeat angle on the ocean viewed through an antiquated lens.

One of the first skyscrapers in Santa Monica, and a famous getaway for the Hollywood elite of then and now.

Go inside to really appreciate this 500-year-old technological masterpiece.

Venice's island of the dead.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Fortified medieval tower house with lovely roof garden.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The oldest operating pharmacy in the world features 800-year-old recipes.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

An extraordinary final resting place full of oversized art, amazing statues, and dead celebrities.

An artsy hidden staircase leads to breathtaking views of San Francisco.