Some excellent shop's on here. I thought I would post a photo of mine.
I only put it together last weekend in a very limited space, a 10 foot by 10 foot storage container. The anvil has been a garden decoration in my mum's garden for the last 30 years. It's in quite good condition and has about a 50% rebound. No markings on it that I can find, the swage block I found buried in an old quarry, its very rough but free is free.
All in all a very compact and simple forge and considering the only smiting I have done is 4 1 day courses making the usuall coat hooks, flowers and tongs it's probably all I need. my workshop is next door with a grinder, mig and arc welders and pillar drill so I have a few more toys if I need them as my skill level grows.