The bermuda triangle

Miami, Puerto Rico and Bermuda are separately some of the most sought-after vacation spots in the world.

But together, lines between them make up the approximate boundary of one of the most mysterious and deadly areas on the planet: the Bermuda Triangle.

Ever since Christopher Columbus sailed through the region in 1492, some weird, unexplained stuff has taken place over the Atlantic Ocean there.

1918: U.S. Battleship Goes Missing With 306 on Board

The USS Cyclops was a collier that operated between the East Coast and the Caribbean, servicing the Atlantic fleet for a time and then ran trans-Atlantic journeys until February 1918.

After fueling British ships in the south Atlantic in Brazilian waters, the ship embarked from Rio de Janeiro, Brazil, on Feb. 16, 1918, came into Barbados in early March and then promptly disappeared completely.

The 306 crew and passengers were never heard from again and, while there are many theories, according to the Naval Historical Center, it "is one of the sea's unsolved mysteries."

1948: DC-3 Commercial Flight Vanishes

On Dec. 28, 1948, Capt. Robert Lindquist took off from San Juan with two crew members and 29 passengers heading for Miami.

When the plane was 50 miles away from Miami, Lindquist reportedly radioed the Miami airport for landing instructions. The airport's reply was met with silence. The plane was never seen again.

According to an investigation by the Civil Aeronautics Board, the plane had electrical difficulties and low battery power. Those findings have not stopped many from blaming supernatural forces on the disappearance.

The theory opined that the Bermuda Triangle is one of the two places on earth at which a magnetic compass points towards true north rather than the usual magnetic north. This difference or vibration between the two, put at almost 60 degrees, came to be termed as compass variation. However, the theory had been subsequently put to rest since the 19th century owing to variations in the earth’s magnetic field.