The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
One cubic mile of seawater contains about 50 pounds of gold.
79
Check your map! Virginia extends farther west than West Virginia.
67
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Europe is the only continent without a desert.
62