U.S. Route 16A The route passes through Keystone, South Dakota; Mount Rushmore National Memorial; The Norbeck Wildlife Management Area and Black Elk Wilderness within the Black Hills National Forest; and Custer State Park (including State Game Lodge and Legion Lake); before rejoining the parent highway. US 16A is famous for its scenic, one-lane tunnels aligned to frame the faces on Mount Rushmore, its "pigtail bridges", and its sections of divided highway but with single (and narrow) lanes on each roadway. It is the only route which can be used to drive through Custer State Park without having to pay an entrance fee for
Rocky Mount State Historic Site a living museum that recreates the year 1791, when William Blount was in residence as governor. It is next to the DeVault-Massengill House. Rocky Mount State Historic Site Rocky Mount, in Piney Flats, Tennessee, also known as the Cobb-Massengill House, was the first territorial capital of the Southwest Territory. The property of William Cobb, the original residence at Rocky Mount served as the territorial capital from 1790 to 1792. Dendroarchaeological investigations at the site by the University of Tennessee revealed that the present dwelling dates to the late 1820s. The property is owned by the State of Tennessee and has