Tour Castillo de San Marcos National Monument, stroll through the old Spanish Quarter, take a narrated carriage ride, and EAT!
Quick Tips: Remember your sunscreen and your camera. There are so many wonderful things to see and take photos of.
Best Way To Get Around: Walk if you are able. You will see so much more that way, especially on streets that are closed to vehicles. A narrated, open-air carriage ride is also a really great way to see this charming old city. Parking close to the old city is limited, so you're better off parking and leaving the car there all day. Avoid the tourist trams--I find them cheesy, personally.