Teenager Samuel Clemens

Historical marker location:

319 North 4th Street, Saint Louis, Missouri

( Marker is on North 4th Street near Locust Street (Federal Reserve Bank Plaza), on the left when traveling north.)

The state of Missouri is home to several unique natural landmarks, including the Elephant Rocks State Park, which features giant granite boulders that resemble a herd of elephants, and the Ha Ha Tonka State Park, which has natural bridges, caves, and a castle ruin.