Spend just a few minutes in Key West and you will likely see either an Old Town Trolley or a Conch Tour Train passing by. These two are by far the most popular ways to tour the island, no doubt because they both allow you to hop on and off as many times as you like during the day. This is a definite advantage, since driving and parking on this small island can be very tricky.
Old Town Trolley has been around for decades, and offers similar tours in many other cities. There are 12 stops around Key West where you can get on or off, and trolleys come by very frequently. It takes you to all of the most popular spots, and the guides give both fun and useful information in a friendly and humorous way. The Old Town Trolley operates from 9 am to 4:30 pm daily, with departures at least every 30 minutes. Kids 12 and under ride for free.