Armories
  Conservatories
  Dams
  Follies
  Gates
  Gazebos
  Libraries
  Lighthouses
  Mills
  Miniature
  Monuments
  Towers
  Unusual

Monterey, Cal. Police Station
Tower of Legends (Singing Tower), Sioux City, Iowa
Old Observation Tower, Vicksburg National Military Park, Vicksburg, Mississippi
White Water Tower, 20th & East  Grand Street
1000 Islands Skydeck
Gunther's Observation Tree, Lake Burian, Seattle Washington
Ethen Allen Tower, Burlington, VT
Water Tower Park, Milwaukee Wis
The London Post Office Tower
Kyoto Tower
Paris - Le Sommet de la Tour Eiffel