Florida Everyne Forgot - Features both civilized (yay!) and natural (boo!) parts of Florida's past that have been obscured by more modern developments.
Under the Magic Kingdom - A page containing pictures and accounts of the pedestrian tunnels under Disney World.
Urban Exploring - A humble site, so far featuring pictures of an abandoned school in Jacksonville.
Urban Exploration Florida - Site of a group of Miami-based explorers with interests in abandoned and live buildings.