Indiana day trip ideas?

I am on vacation the week of May 17, but will return home on Wed and return to work the following Tuesday. This leaves me at least 4 days to get outside and play on my bike!

I am looking for day-trip ideas in Indiana. Have bike rack and will travel :)

There is always Brown County, but I am still working out shifting/fitting issues with my LHT and don't think that my legs are quite ready for that anyway. I AM getting better at hills though, can now generally ride them instead of walking :rolleyes:

Do you have a favorite scenic ride in Indiana that is a 2 hour driving distance from Indy? Will also hit my country roads, but it would be good to see other areas as well - so ideas are appreciated.