This is an assortment of pictures and web sites that have inspired me.
To start off with is a small collection of pictures of buildings that were auctioned on Ebay some years back. Unfortunately I didn't record who it was who made them.
In a similar vein, Abandoned Places has some fascinating pictures of decaying buildings. I have yet to apply any specific inspiration to my modeling, but the atmosphere of the site is well worth the visit.
While browsing Terragenesis I came across Moif's post on a campaign he was designing. What first caught my attention were the maps for Chapter 3 and 4 in a post about a 1930's Rocketman campaign on the Terragenesis forums. You can see the maps in context by browsing his blog posts about Rocketman III.
Then I have pictures of real bridges and overpasses to inspire me for the Bridge Project that I plan to enter in the Terragenesis Bridge Contest (Sep 2006).
For my dungeon project I am collecting pictures and links of what other people have built.
The following are some of the best terrain web sites that I have found so far.
Major General Tremorden Redderrings's Colonial Wargames Page (from archive.org) — Okay it's not 6mm scale terrain, or even sci-fi. But if you're looking for enormously entertaining battle reports, awesome terrain setups, etc., etc., then you must check this site out. It is highly recommend by many terrain builders.
Necromundicon — This site is geared toward the Games Workshop game, Necromunda. This guy is a great terrain builder, and two of my favorite pieces, just for the detail he puts on them, are the "Docks" under the "Gothic" section and the "Bulkhead 1" and "Bulkhead 2" projects under "Industrial scenery". The Mordheim terrain (also in the "Gothic" Section) is amazing too.
Terragenesis — the best Terrain site on the web! Most of the terrain displayed on this site is built for Games Workshop's games, but terrain is generic so check it out to see some amazing projects. Not that much for 6mm, but still plenty to inspire you.
Matakishi's Tea House — A fun site covering a broad range of wargaming projects. Good examples of using cork tile for building houses.
How to Build Realistic Model Railroad Scenery has a preview online.