This relatively undiscovered resort island offers a good alternative to some of the state's crowded beaches. Only 4 mi/6 km wide by 6 mi/10 km long, it's one destination that you don't want to tell too many people about. There may not be a whole heck of a lot to do (although the island resorts have plenty of the usual activities), but that's precisely the point—it's a true getaway. (Be prepared, though: In our experience, high-season rates on Marco Island are higher than rates in more heavily developed resort areas.)
You'll see lots of wildlife. Many birds frequent the so-called Ten Thousand Islands that lie near Marco—several bald-eagle nests have been identified in the area. If you get out on the water, there's a good chance you'll see dolphins frolicking. Affluent Miami residents who head to Marco for the weekend have built some impressive mansions there. For an enjoyable getaway, take a local charter boat to a private island for shell collecting.
Marco Island is 150 mi/240 km south of Tampa.