I 15 thru Salt Lake City

There's a rest stop in southern ID on I-15 in the lava fields. If you stop, there is a walking path that takes you through "Hell's Half Acre". It is a great leg stretch and interesting info to boot.


Also, in northern Utah on I-15, I recommend you stop at the Bear River Migratory Bird Refuge on the exit for Forest St. You can see the VC from the HWY. Great birding, and lovely VC. VC closes at 5, but birding auto tour is open dawn to dusk.

In Heber, I recommend Vito's for Italian. It's the best in Utah.

Chuck-A-Rama Buffet in Ogden!

Maddox in Brigham City is a good stop for lunch.
After that, take I-84 from Ogden to Heber and avoid the chaos of the Salt Lake area.

In SLC you have,
The Natural History of Utah Museum https://nhmu.utah.edu
The Hogle Zoo just south of that https://www.hoglezoo.org/
The aquarium on 11400 South exit http://www.thelivingplanet.com/
There is a Mining Museum in Park City, but I haven't been to it yet.