Architectural Follies in America - Gwyn Headley 1996 (Preservation Press -John Wiley & Sons 0 471 14362 6)

A great attempt at cataloguing all the follies across America - an excellent series of photographs and descriptions of buildings which vary from stone towers throught giant animals, to houses made from bottles.

Eccentric America - Jan Friedman 2001 (Bradt 1 84162 023 8)

'The Bradt Guide to all that's Weird and Wacky in the USA' - which covers a lot of ground from museums, events, vehicles and people, but thankfully, also some buildings.

Architectural Follies in America - Clay Lancaster 1960 (Charles E Tuttle,  Library of Congrees 59-14088 )

Long out of print, but worth looking for, is this book of Follies, which in this case means mostly big odd houses in unusual styles such as oriental, but with a smattering of really odd edifices such as the Elephant Hotel and the Leaning Tower of Niles - lots of pictures, but all either line drawings or coloured paintings.

The Watts Towers of Los Angeles - Leon Whiteson (Mosaic Press 1989, 0 88962 393 7)

Lots of information and colour photographs of the Watts Towers

Private Towers- James Grayson Trulove  2003 (Harper Design  0 06 059447 0)

Not really follies, but a selection of modern tower houses, designed and built to be lived in, but with their fair share of eccentricites such as a working set of bells in one. Lots of big colour photos and sets of plans. If you can't find a real folly or water tower to convert, here are some ideas for building new variations.