Home to the AAA affiliate of the Boston Red Sox (the Pawtucket Red Sox or “PawSox”) is McCoy Stadium in Pawtucket, Rhode Island. Leo Caisse says

It looks like the photo was taken during a game since the parking lots are full and the exposed bleachers on the third-base side appear to be full.

This is Biosphere 2 in the Arizona desert. Constructed between 1987 and ‘89, the ill fated ’self-contained environment’ experiment was supposedly intended to explore the possible use of closed biospheres in space colonisation (you know, like in Total Recall!). The name comes from the idea that it was modelled on “Biosphere 1″, the Earth. Unfortunately it seems that the first inhabitants argued constantly and nearly starved.

It looks like Biosphere 2 is currently available for redevelopment if anyone’s interested… but they also seem to do tours if that’s a little out your league…

Finally, Biosphere 2 featured in the 1996 film Bio-Dome with Pauly Shore and Stephen Baldwin, but David Hill asked me not to mention it.

Thanks to (deep breath) Jon Anderson, Why Law, Colin Marquardt, Yablo, Roy Tanaka, Jered, Matthew, Chris, Parker, Douglas T. Allbright, David Hill and finally Papapenguin. Phew! Thanks guys

Looks like these trains are stopped at a level crossing on the Burlington Northern railroad track in Wyoming. The Northern one is chopped off by some low-res imagery, but scroll south to see just how incredibly long they are! Amazing.

Thanks: tamat

Update

In the comments, Eric Smith said:

These are unit coal trains, typically 100-115 cars long. These were probably going from/to the Powder River Basin in Wyoming, which is just north of the photo you found. Here is the loading loop, large enough to run one of these trains in a circle.

You can see that the image was taken just after the two ends of the train passed each other, as the black carts are fully loaded with coal.

As the tallest state capitol in the United States the Louisiana State Capitol is 450 feet high with 34 floors. Twenty-five hundred rail cars were needed to bring in the limestone used on the exterior and the interior marbles which came from distant places, including Vermont and Italy.

Thanks: noj

This is the Glen Canyon Dam in Arizona. What’s great about this post is the bridge that extends across the valley in front of the dam, casting an excellent shadow on the dam itself. The dam’s construction began in 1956, and although it was not dedicated until 1966, it was able to begin blocking the flow of the river in 1963.

Thanks: Dick Nielson