Sovereign Hill is an outdoor museum in my home town of Ballarat, Victoria, Australia. It's theme is the re-creation of an 1850's Australian Gold mining town.
http://www.sovereignhill.com.au/
For thje second year in a row they have had a special "steam day" where, along with their own permanent steam exhibits, they have people bring in steam models and full size traction engines to run around for the day.
Apart from the excitement of running a traction engine on some different terrain than the oval arena of our club, it also provides for some great photos