Finally opening, the Harley-Davidson's new motorcycle museum is expected to open in July of this year.
It is in Milwaukee, Wisconsin and has been in the works since 2005.   

http://images.businessweek.com/ss/08/07/0711_harley_museum/index.htm

We were able to go to the 100 year celebration party in Milwaukee in 2003. A large group of us traveled from Greenville, South Carolina all the way to Milwaukee.  Each day brought new adventures with memories that we will treasure forever. We stayed at Lake Geneva BudgetHost Diplomat Hotel which allowed us to reserve the whole motel for our group. They
were such great hosts.  If you get the opportunity to go to Lake Geneva (bike or no bike) this is a great place
to stay.   http://www.budgethost-lakegeneva.com/