Travelers to La Paz, Bolivia, often become ill the moment they arrive in the city, Why? La Paz is 11,900 feet above sea level, the highest metropolis in the world. People with ailing hearts or bronchial problems are warned to stay away, and even those in perfect health usually cannot avoid some illness resulting from the Altitude.
Antarctica is the only continent that does not have land areas below sea level.
The states of Arizona and Hawaii have never adopted Daylight Savings Time, Neither has Puerto Rico, the Virgin Islands, or American Samoa.