Over on sploid.gizmodo.com, they suggest "It's hard to believe these photos are just miniatures" and they aren't wrong because the dioramas they are showing us here are all so hyper-realistic, it's hard to tell they aren't real without some perspective or something in the photograph for scale. The old barn (or shed) in the photo below has an amazing array of materials being mimicked: wood, glass, metal, and rubber, as well as the actual flora. All of it is in various states of decay, which lends authenticity to everything. Those effects are compounded by one another.
Also, on meeples.wordpress.com, Neil is "Building a Bit More Scenery . . . Part II" here. These are for 15mm wargames, a couple of small pieces to place around the table. This style of basing can be used with an entire wargaming setup that is very realistic or even on a table that is decked out in felt, as a way to simply add highlights to an otherwise plain table.
Finally, on brothers-brick.com, they have a "Builder spotlight" which shows "Aaron Newman and his alternate LEGO Castle universe" here. The interview is extensive and highlights a number of LEGO builds for various terrain / scenery projects, many of which could be used for tabletop gaming purposes. Meanwhile, on their YouTube channel, check out the video entitled "Aaron Newman's fan-built 64043 Dwarf Workshop demo." Enjoy!