Arkansas' Hot Springs National Park is the smallest fully fledged national park in the United States. This park, which includes commercial soaking facilities where visitors can enjoy the hot springs firsthand, covers about 5,500 acres. By contrast, several of Alaska's national parks, which are among the largest in the system, cover more than 3.5 million acres each.
The state with the most lakes in the United States is Alaska; it tops the charts with a whopping three million lakes, leaving the runner-up state of Minnesota with 10,000 lakes far behind. Its notable lakes include Lake Iliamna, which is the third largest lake in the United States.
The small Florida archipelago known as Dry Tortugas National Park initially was called "Las Tortugas" by the Spanish conquistador Ponce DeLeon. "Tortugas" means "turtles" in Spanish, and the islands were so named due to the abundance of turtles in the area. The "dry" part of the name comes from the fact that there is no fresh water to be found on the small bits of dry land in the area.