Audio - Experts

I'm putting together some tourguide files for my summer vacation (although we haven't decided exactly where we're going) it will probably have a stop in Northern California and include a drive through the midwest, prob along I-70.

Anyone an expert in architecture or something else(largest ball of string) that would be willing to record something that I could put into a tourguide file? I also have a trip to geneva, switzerland for work in May if anyone has suggestions.

Just trying to make my trip more interesting...