You get a twofer on this one. Sunday I drove down west of Yellowstone and through a portion of southeast Idaho before crossing over to Jackson, Wyoming. The town itself is named Jackson. The valley between the Teton and Gros Ventre mountain ranges is what is known as Jackson Hole. Just north of Jackson is Grand Teton National Park. The mountains stretch for 40 miles. I posted the top picture to try and capture the length of the range (and you are only seeing a portion). The bottom picture shows how rugged these mountains are.
In the middle of the bottom picture is Grand Teton, which tops out at a whopping 13,770 feet. To the left is Middle Teton and to the right is Mount Owen. Even at 13,770 feet Grand Teton is not the highest point in Wyoming. That honor goes to Gannett Peak at 13,809 feet. It is located a little bit southeast of the Teton range.
The accessible part of the National Park lies to the east of the mountains. The main road through the park runs pretty much parallel to them until reaching a series of lakes, at which point it starts getting further away. There are no roads in the mountains themselves. So visitors basically travel the main road and see the mountains from varying perspectives. There is a bicycle path which runs parallel to Teton Park Road and I saw many, many bikers (it is fairly level, unlike the roads in most National Parks). There are lots of trails which branch out between the road and the mountains.
There are two small lakes, Jenny Lake and Leigh Lake, which are south of the largest lake, Jackson Lake up near the north end of the range. There are also two small lakes located east of Jackson Lake, Two Ocean Lake and Emma Matilda Lake. There are several lodges at various points in the Park, as well as several campsites.