The downtown post office is not just a place to mail packages and send snail mail. It is the site of the nation's first open-air post office, and listed on the federal Register of Historic Places. The designation should come as no surprise for a city largely founded a century ago for tourists and snowbirds. With Italian-inspired architecture, archways and intricate metal work, the building is an artifact from a wealthier era downtown, when a trip to the post office was a special outing to get letters and hear news from relatives and friends far away. A portion of the building was enclosed and air-conditioned in 1969.