U.S. Geography

Which of these became a U.S. monument in January 1908?

More Questions from U.S. Geography
What is the two letter postal abbreviation for the state of New York?
Reveal Answer
Delaware is how many miles long?
Reveal Answer
Which state got its name from an Iroquois word meaning "Happy Hunting Ground"?
Reveal Answer
Which two European countries both claimed the Ohio Territory as theirs?
Reveal Answer
Which lake is located in Vermont?
Reveal Answer
In what state was the town of Hobbs End located in John Carpenter's film "In the Mouth of Madness"?
Reveal Answer
What Californian city was the band Sublime from?
Reveal Answer
What city is known as "The Big Apple"?
Reveal Answer