This city tour on an air-conditioned trolley bus leaves from the Visitors Center at 26 West Street--across from Ram's Head Tavern.  Nice cushy seats.  Their motto is "350 years in one hour" and you get a nice overview of the area.  A lot of information without being tedious; droll comments along the way keep it interesting and fun.  They also have a 40-minute version of the same tour that leaves from the waterfront.  It's a drive-by tour; makes only one stop at an overlook.  Doesn't go onto the Naval Academy grounds, but you learn a lot about the Naval Academy anyway.Annapolis trolley tour