There is also Burkholder's which is in Denver and definitely worth the stop. This shop is on a farm and is home to over 10,000 bolts of fabric. It is a feast for the eyes and disaster for your credit card! It was fun to see all the new lines of fabric.
If you get tired of going to quilt shops there are several great outlet malls to visit as well as many tourist attractions. The Lancaster area is the heart of Amish country.