== Category removal suggestions == 

 On going through the category list, I feel that there are a few categories that should be removed, as they appear as if they've just been added and unnoticed. Below are the few I feel possibly don't belong here anymore. Some are a bit iffy and I don't really mind, but I added them nevertheless: 

 {| class="sortable wikitable" 
 |- bgcolor="#ececec" 
 ! Category !! Structure !! Country !! City !! Height (m) !! Height (ft) !! Built 
 |- 
 |Mast radiator, insulated against ground || VLF transmitter Lualualei || United States || Lualualei, Hawaii || 458.11 || 1,503 || 1972 
 |- 
 |Five-sided building||JPMorgan Chase Tower|| United States || Houston || 305 || 1,002 || 1982 
 |- 
 |Electricity pylon built of concrete || Yangtze River Crossing, Nanjing || China || Nanjing || 257 || 843 || 1992 
 |- 
 |Electricity pylon of HVDC-powerline || Yangtze River Crossing, Wuhu || China || Wuhu || 229 || 751 || 2003 
 |- 
 |90° twisted building||Turning Torso|| Sweden || Malmö || 190 || 623 || 2005 
 |- 
 |Equilateral Pentagon ||Baltimore World Trade Center || United States || Baltimore || 123.5 || 405 || 1977 
 |- 
 |Light advertisement ||Bayer Cross Leverkusen|| Germany || Leverkusen || 118 || 387 || 1958 
 |- 
 |Electricity pylon of powerline for single phase AC || Bremen-Industriehafen Weser Powerline Crossing || Germany || Bremen || 111 || 364 || ? 
 |- 
 |Pre-modern Chinese pagoda||Liaodi Pagoda|| China ||Ding County, Hebei|| 84 || 275 || 1055 
 |- 
 |Lantern Tower || Boston Stump || United Kingdom || Boston, Lincolnshire || 83.05 || 272 || 1520 
 |- 
 |Electricity pylon (concrete, prefabricated)|| Pylon 310 of powerline Innertkirchen-Littau-Mettlen || Switzerland || Littau || 59.5 || 195 || ? 
 |- 
 |Monolithic obelisk || Tuthmose III Obelisk || Italy || Rome || 36 || 118.1 || ? 
 |} 

 The most likely to be kept in the article I would say is 90° twisted building and Light advertisement. Please give your input, and if you feel there isn't good enough reason to remove these, I'll give my opinions for each. Thanks,