I grew up near Hamner Tower in Tampa. According to this document (PDF) at the Hillsborough County and City of Tampa Wateratlas, Hamner Tower is

named after B.E. Hamner, one of the major land developers of the Forest Hills North Tampa area. The tower is a remnant from when this area of the County was more rural. The eighty-five-foot tower was constructed in 1936 as a fire lookout. As this area of the county became more urbanized and served by the fire department, the structure fell into disuse. In the early 1990's, the fire tower and the 8.7 acres surrounding it were threatened by impending sale and subsequent development. A group of residents banned together to save the historic treasure and the natural environment surrounding it. Hillsborough County bought the land and the tower through the Environmental Lands Acquisition and Protection Program (ELAPP) and turned the small parcel on the corner of Fletcher Avenue and North Boulevard into its first urban wildlife preserve.

Check out the rest of my pictures of Hamner Tower in Tampa.