The Bermuda Triangle. If you look on a map of the Atlantic Ocean and draw a line from Miami to Bermuda, then from Bermuda to Puerto Rico, then from Puerto Rico back to Miami, you'll have the general geographic area known at The Bermuda Triangle... a place where a large number of aircraft and boats have disappeared under mysterious circumstances, and explanations of bizarre behavior range between everything from compass variations to erratic gulf streams, rogue waves, conspiracy theories, and alien interference.

Easter Island. In the middle of the South Pacific, more than 2,100 miles from the nearest continent, and nearly 1,300 miles from any other inhabited island. Despite its extreme geographical location and lack of modern methods of construction, the indigenous Rapanui people somehow managed to create 887 moai - humanoid stone statues that average over thirteen feet in height and almost fourteen tons each. Many of these moai were transported out of the stone quarries where they were created and have been positioned on stone platforms around the island.

Stonehenge. England's famous circular rock formation remains one of the great mysteries of the world. Created at least 4,000 years ago, the society that built it left no written records with which to decipher its meaning. While the popular theory is that it's some kind of burial site, other conjecture includes that it might be a place of healing, an astronomical observatory, or a location for the various peoples of the British Isles to congregate. Like the moai of Easter Island, the biggest mysteries are how such an impressive architectural feat was accomplished by such simple people without the use of many tools... and why it was created in the first place.

Lake Vostock. Did you know that under the icy surface of Antarctica, there are more than 140 sub-glacial lakes? Vostock is the largest of them, a fresh water lake that measures approximately 160 miles long by 30 miles wide and has a depth of more than 1,100 feet, giving it a greater volume of water than Lake Michigan. Vostock's surface is actually 1,600 feet below sea level. Having been sealed off from the rest of the world for anywhere from 15 to 25 million years, there's no telling what kind of life forms have may have thrived down there.

Mount Roraima. In South America, the border point between Brazil, Venezuela, and Guyana can actually be found on the plateaued top of Mount Roraima, at an elevation of just over 9,000 feet. The tepui plateau itself is situated well above the clouds and this remote locale is home to unique flora and fauna that don't exist anywhere else in the world. It rains nearly every day of the year, and some of the tallest waterfalls in the world occur when torrents of rainwater run off the side and crash down the sheer sides of this tepui.

Socotra. Between the Horn of Africa and the Arabian Peninsula, you'll find the archipelago of Socotra. Officially part of the Republic of Yemen, a full one-third of Socotra's plant and animal life can be found nowhere else on Earth. It has been described as the most alien-looking place on earth (just look up "dragon blood trees" if you don't believe me). As a result, animal husbandry is a major industry among the indigenous people.

Roswell, New Mexico. In the late 1940s, there were rumors of a UFO crash in this small town 200 miles south of Santa Fe. Despite reports that the remains of an alien were found, the U.S. government dismissed these reports and it wasn't until the 90s that they admitted the recovered debris was from a top-secret government project. Conspiracy theorists still maintain that it was all a government cover-up, and the town has since embraced its "alien" history with extraterrestrial welcoming committees and an annual alien festival.

The Mystery Spot. Called simply "The Mystery Spot," this cabin in Santa Cruz, California seems to defy the laws of physics. Built on flat, level ground, depending on where you stand in the cabin, it can appear that you're walking on the walls, standing on the ceiling, or looking into a square room that's narrower on one side than another. While scientists have since claimed that the site is merely located on a gravity hill (a place where the layout of the surrounding terrain produces an optical illusion), don't take science's word for it. Some have theorized that it's a dimensional vortex, or that aliens have planted magnetic cones in the nearby landscape and have created a homing beacon for their upcoming invasion.

Atlantis. Once upon a time, before the continents moved and shifted into their current configuration, there was supposedly another continent located between South America and Africa. The Lost Continent of Atlantis (if it existed at all) has been the subject of many theories, including that it collided with and became part of another continent, that it sank to the bottom of the Atlantic Ocean (some believe there is still a race of Atlanteans living down there, either as an aquatic species or with their society trapped in a gigantic air bubble), or that it was swallowed up by another dimension and still resides on another plane of existence.

Nazca Desert. In the middle of the Nazca Desert in Peru, you'll find a series of ancient geoglyphs created by removing the red pebbles covering the ground and revealing the whitish earth underneath. At first people didn't know what to make of them, until man invented our ability to fly and realized that, in looking down at these Nazca lines, there are literally hundreds of them, including human and animal figures, trees, and flowers. The largest of these images are nearly 700 feet across and were created thousands of years ago, when their creators didn't have the ability to view their creations from the air. Explanations have ranged from runways for alien spaceships to running tracks for Olympic athletes to pop art.