Just finished the 2012 segment of The Dead Stadium Tour which has been going on since 1990 (with a "preview" in 1989). The annual trip gained this nickname since it was "designed" to visit ballparks that were either scheduled to be torn down or at risk of demolition. In a year when no park was scheduled to meet its demise, another stadium was chosen "at random".

Here is the site showing pics from the last 23 years including many long gone ball parks.