Michael Jantzen | The North Slope Ski Hotel
The Radcliffe Camera at Oxford University, built in 1737-1749. It is the earliest example of a circular library in England, and amusingly, according to Wikipedia, J. R. R. Tolkien (author of The Lord of the Rings) remarked that the building resembled Sauron's temple to Morgoth on Númenor. It is also mentioned in 'The Notion Club Papers'.
travelingcolors:Two Towers, Oxford | England (by Photomorgana)
Santa Maria Nascente, Duomo di Milano, Italy
Bryant Park Hotel - The American Standard Building - 40 West 40th Street between 5th and 6th Avenues
A moment in time - Twin Towers~Steve McCurry
"The Straining Tower" Lake -- Llanwddyn, Wales (by Bearded Iris, via Flickr)
St. Patrick's Cathedral in New York ~ Neo-Gothic design.