A surprise from our recent anniversary tour of Central Texas barbecue joints was the discovery of all the train-watching opportunities near the places we visited. In Smithville, a few blocks from Zimmerhanzel’s Bar-B-Que, there’s a nice city park, with a big gazebo, located trackside. In Giddings, a short walk from the City Meat Market, you can watch coal trains (empty and full) pass through and visit a train museum. One of the exhibits lets you toot a train horn. Bet you can’t do it just once!! In Taylor, right outside the doors of the Taylor Cafe, there’s a switching yard…