You can choose either walking tours or those conducted via various other transport, from your own car to a limo. Options include downtown, the Colonial Coast, the Low Country, etc. While children generally don't jump up and down at the prospect of a guided tour of historic sites, we've found horse-drawn carriages up the appeal significantly. You may be lucky enough to see a chartered and decorated carriage ferrying a bride and groom from a wedding at one of the Historic Downtown churches. During rain or extreme heat, tours are not held.
Narrated tours are about an hour in length.
Historic Savannah Carriage Tours 305 W. Harris St. Prices hinge on size of the party, carriage, and time of day. It seems to us there are new entries in this category constantly, so here's a sampling. Note, too, that many of the tour bus companies offer a walking version as well. These tours generally depart from a specific downtown square so check when you make your reservations.