Arches is a great park to visit for families.
Most of the park can been seen from the road side or by short walks. To really explore the park, and see some of the 2000 arches in the park, you need to get out and do some hiking. Below are trails I have hiked at Arches. The only way to get a good look at this arch in person is to hike the 3 mile round trip trail to the base of the arch. The trail for the most part is moderately level.