Grand Canyon Nat'l Park
Highway 64

Highway 64 goes north from Williams, passing through Tusayan, a small town at the south entrance to Grand Canyon National Park, and then into the park and Grand Canyon Village at the South Rim.

Williams -
Grand Canyon Railway - In 1901, the first train left Williams, carrying passengers to the Grand Canyon (and kids were on that train). Today your family can ride the Grand Canyon Railway, as a day trip or stay overnight. Vintage diesel or steam locomotives pull the train, the ride is about 2 hours each way. In winter, kids will enjoy the Polar Express, with cookies and hot chocolate.
Williams Depot - Even if you aren't taking Grand Canyon Railway, check out one of the original railway engines and caboose, parked on the track. Every day at 9:30am, there's a short "wild west" show next door - 15 min. skit with cowboys and horses.
Aquatic Center - Need to cool off? Head to the local Aquatic Center, open in the afternoons for public swims, shallow end for little kids.
Monument Park - At the western end of town is a small park with picnic tables and trees, so bring your lunch to eat outdoors.
Planes of Fame Air Museum (Valle) - Since most everyone in our family are airplane buffs, we had to stop at this air museum. Kids can check out Russian MIGs, WWII German planes, stunt bi-plane (it can land upside down) and more. There are shaded picnic tables out front, so this is a great lunch stop.
Tusasyan - Tusayan is right at the south entrance to Grand Canyon National Park. It's a convenient place to stay and just a short drive to Grand Canyon Village.
Grand Canyon IMAX Theater - Stop into IMAX Theater to watch the Grand Canyon Movie by National Geographic A big screen presentation, kids will feel like they're riding the rapids or flying over the Grand Canyon (cheaper than a helicopter ride). In the theater lobby, check out two replicas of the boats used by John Wesley Powell to navigate down the Colorado River.