Gardiner Montana, located at the north entrance of Yellowstone National Park is the only entrance open to cars year round. This gateway community at the North Entrance is completely surrounded by mountains, streams, and valleys.  Gardiner can be described as a quieter community, which is ideal for visitors seeking a more tranquil Yellowstone vacation.  The most famous structure of Gardiner is the Roosevelt Arch, dedicated by Teddy Roosevelt in 1903.  Although much has changed over the decades, Gardiner remains a charming small town on the edge of the Yellowstone River, and the North Entrance to America's first national park.