American Tower Christmas is a 513.3 metre high guyed TV mast at Christmas, Florida, USA at 28°34'53" N and 81°4'29" W. American Tower Christmas was built in 1999. Christmas is a census-designated place and an unincorporated area located in Orange County, Florida. ... The United States of America — also referred to as the United States, the U.S.A., the U.S., America, the States, or (archaically) Columbia—is a federal republic of 50 states located primarily in central North America (with the exception of two states: Alaska and Hawaii). ... 1999 is a common year starting on Friday of the Common Era, and was designated the International Year of Older Persons by the United Nations. ...
The Gerbrandy Tower consists of a concrete tower with a height of 100 metres on which a guyed aerial mast is mounted.
Towers of the type of Gerbrandy tower don't fit well in existing classification hierarchies of free standing tower antennas or guyed masts since it incorporates elements from both.
One is the radio tower of Smilde (Netherlands), which consists of a 80 metre high concrete tower, on which a 223.5 metre high guyed mast is mounted and the other is the TV Tower Waldenburg (Germany), with a total height of 145 metres.
Towers and buildings with masts on them (that are a hybrid) are in their own list.
There is often crossover in term usage as some skyscraper use the tower term, some towers use the mast term, and ironically 'skyscraper' has some word heritage from references to high sailboat masts.
Self-supporting masts are covered as towers under the List of towers, and the borderline cases are mentioned separately (hybrid designs, under water, etc.) elsewhere on this page.