Use the following gigapans to study various kinds of architecture around the world. Zoom in upon salient details of the construction, even to the point of rivets and hinges. This kind of gigapan can be used for buyer agents who want to take a close look at shingles on the roof, windows, rust spots on gutters, etc.
5225 Lindell
6 Lenox Place in the Central West End in St. Louis
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http://www.gigapan.org/gigapans/27919/
Click on the link above for one example - see below the screen shots I took off the above site of this interesting structure in London, England. You will notice how the tip of the structure can be zoomed upon to see the detail of the cap at the top. The image on the right is a screen clip after I zoomed in upon the top of the structure. This type of image can be used by professors teaching construction and architectural techniques.