Here are the buildings I've come up with...so far...many more to come...
Still working on converting them and getting them onto the Civ3 invis background color.
So far we have...
Alcatraz
Arc De Triomph
Shop
Bank
Capital Records Building
Casino
German Castle
City Hall
Circus
CN Tower
Coal Power Plant
Solar Power Plant
Nuclear Power Plant
College
East India Company (well, another building I thought would work as this)
Eiffel Tower
Empire State Building
Replacement for Forbidden Palace
Grand Central Station
Great Lighthouse (looks more like the real thing than what is in the game already)
Guild Hall (well, yet another building I thought would work)
Hotel
Lincoln Memorial
Military Outpost
Musuem of National History
Smithsonian (Washington DC)
Newspaper
Notre Dame
Sidney Opera House
Police Station
Prison
Pub
Radio Station
Radio Tower
Recycling Center
Restaurant
School
Two Sewer Plants (the one you have and another one)
Smithsonian Castle
Sky Scraper
Sports Park
Stadium
Stonehenge
Supreme Court or District Court
Two Teamsters Offices
The Sphinx
Two TV Stations
Twin Towers
United Nations Complex
Some of these are already done...some of these can also be used as other buildings...will still try to find more while working on and convertin what I have...
I use all of these images for the aerial view...I can them resize them for use in the buildingslarge.pcx or buildingssmall.pcx files (for the build queues)...I can resize and put on a background for the Civilopedia...etc. etc. etc...
Here is an example of one of the Capital Records Building...