I recently came across this site which documents the travels of architect Leonard Lane as he has criss-crossed Texas to visit and photograph the courthouses of all 254 Texas counties. Begun in May 2006, he has recently completed the circuit and has established this exquisite website that contains information on each and every one. I haven't been all the way through it yet, but the photographs are great and he often includes images of adjacent architecture. In my office, this website could cause a greater loss of efficiency than Facebook; easy to get lost in it. I encourage you to have a look.
You can see it at www.254texascourthouses.net
Our contribution, the Erath County Courthouse, is shown here.