Here's a fun tip for anyone traveling down to South Florida: Rather than taking the fastest route, I-75, cruise the Tamiami Trail. Besides seeing lots of swampland near the Everglades, you'll also encounter this itty bitty post office. Yep, this tiny shack is a real, working U.S. post office for Ochopee, Florida in Collier County! Unfortunately, it was closed when I was there, so I couldn't take the full tour. But, an historical marker notes it's considered to be the smallest post office in the United States. What a slice of Americana!
Update: I'm pleased to report this cute little post office is not scheduled for closure by the USPS. After seeing a couple of comments from folks wondering about its status, I did a little research and found the complete list of post offices on the chopping block --- and Ochopee is not on it. Whew! To see the full state-by-state list, click here.