If you are a fan of the show, you can visit Counts Kustoms in Las Vegas. The place is literally in a light industrial park. However, there is a public area where you can come in and see Danny's own car collection and buy souvenirs in his gift shop
You can see into the garage/workshop from a distance, and we did see one person we knew from the show. Not sure if Danny every makes public appearances or not.
The girl at the front was very friendly, but the other employees we dealt with were not particularly pleasant. There is some cool merchandise for sale, but the prices are a bit high -- $25 for a Count's Kustoms T-shirt.