1. KINGDA KA: The green giant at Six Flags Great Adventure in New Jersey claims the title of world's tallest roller coaster, measuring 456 feet at its peak.

2. TOP THRILL DRAGSTER: This ride at Cedar Point in Ohio ranks second worldwide in both tallest steel roller coaster and tallest steel roller coaster drops.

3. EL TORO: Translated as 'The Bull', El Toro at Six Flags Great Adventure in New Jersey features a 76 degree drop, at one point the record for steepest drop by a wooden roller coaster in the world.

4. VOLCANO, THE BLAST COASTER: This winding coaster, built in and around a mountain at Kings Dominion in Virginia, boasts the world's tallest inversion, at 155 feet above the ground.

5.SUPERMAN: KRYPTON COASTER: The Superman ride at Six Flags Fiesta Texas in San Antonio throws you for the biggest loop in the world-- 360 degrees at 145 feet in the air.

6. FORMULA ROSSA: Abu Dhabi is the home of the world's fastest coaster, topping out at 150 miles an hour in under five seconds. Protective eyewear required.

7. TAKABISHA: The Fuji-Q Highland park in Japan boasts a ridiculously steep drop on its Takabisha coaster, sending its riders tumbling at 121 degrees.

8.TEXAS GIANT: The title of tallest wooden-hybrid coaster (a steel track with a wooden frame) goes to this behemoth, located in none other than Six Flags Over Texas in Arlington.

9.TOWER OF TERROR II: Because apparently the first one wasn't enough, the second Tower of Terror in Queensland, Australia was built as the tallest and fastest in the world when it opened, and is still on many top ten rankings.

10. COLOSSOS: This colossal wooden coaster in Germany is the tallest running wooden coaster in the world, and thanks to its laser cut is said to be smooth as steel.

11. MILLENNIUM FORCE: Named 2010's best steel coaster in the world by Golden Ticket Awards, the Millennium Force at Cedar Point is also top ten in the tallest, fastest and steepest categories.
Source: businessinsider.com