Harriet Beecher Stowe House:
http://stowehousecincy.org/ is on Gilbert Ave. at Martin Luther King Dr. in Walnut Hills.There hours are listed on the website, and you can arrange a group tour ahead of time.
William Howard Taft House:
http://www.nps.gov/wiho/index.htm is a National Parks Historic Site on Auburn Ave. in Mt Auburn. It's open daily from 8-4 with guided tours every 30 minutes.
The Taft Museum:
http://www.taftmuseum.org/ is an historic home that is now a museum at 316 Pike St. Downtown.
There are lots of historic homes in Cincinnati. For more information, you might wish to visit the Cincinnati Historical Society
http://library.cincymuseum.org/
