Unranked tower addition SE of Otis, RMNP - Zowie Tower, 11,620 ft
40.2921,-105.6721, ~120 ft prominence, 5.8+
I'm not certain of the name's origin. It is located in Rossiter's and Gillett's guides, as well as MP and SP.
http://www.mountainproject.com/v/zowie/105745459
An interesting picture of the 1953 first ascent at Neptune:
http://www.mountainproject.com/v/105852827
There's also an Otis Flower Tower and a Wham Tower nearby.
Wham (approximate, ~30 ft prominence 40.2928,-105.6718)
Otis Flower Tower (~60 ft prominence, 40.2917,-105.6744)