More than 700 species live within this murky marvel of a swamp on California's coast.

This stunning 15th-century royal hill fort preserves the age of chivalry in Rajasthan.

An ancient octagonal weather station named for the eight Greek gods of wind.

The final resting place of 19th-century sailors previously banned from being buried within Portuguese Macau.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The ruined doorway is a portal to the building's turbulent and torturous past.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

This glamorous old building is said to have inspired the Tower of Terror.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The ghostly remains of an accidental sea.

A trash dump made beautiful by nature's power.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

Take a monster truck tour around an ostrich farm in the middle of the desert.

A hidden subterranean installation offers a view of the sky.