Arches National Park offers more bang for your sightseeing buck from a vehicle than just about any other park. The park contains more than 1,500 recognized natural arches, ranging in size from just a few feet to the 306-foot span of mammoth Landscape Arch. 
If you only have a couple hours, drive to the Windows Section where you can check out some of the park’s largest arches, or drive to the Delicate Arch viewpoint and see Utah’s most famous arch at a distance. If you have four or five hours, you have time to drive all the park’s paved roads and spend about ten minutes at each viewpoint.