Top 10 Things You Didn't Know About National Parks

Odd State Out
Poor Delaware. It's the only state in the country not to have a national park, monument or any other site in the federal system. (Even American Samoa, Guam and Puerto Rico have one. The Virgin Islands has five.) Lawmakers from the tiny state (itself smaller than 15 national parks) have spent years trying to land a National Historic Site to showcase its colonial history, so far fruitlessly. But with Delawarean Joe Biden as Vice President, Senator Tom Carper has said, "I like our chances."

• Ken Burns, American Filmmaker