On
http://skyscraperpage.com/diagrams/ there is a section with "Links to interesting diagrams". I think, we should add many further links to interesting diagrams there, hereby I would suggest the followings:
* suspension bridges
* cable-stayed bridges
* UNESCO-world heritage structures
* broadcasting towers with observation deck
* large towers built of wood
* residential buildings
* educational buildings
* hospitals
* towers and masts of LF-transmitters
* radio towers and radio masts insulated against ground
* Soviet-type radio masts with long crossbars
* partially guyed towers
* additionally guyed towers
* electricity pylons
* aerial tramway support towers
* transporter bridges
* moveable bridges
You can make also suggestions.