Tank Stream Tours - Ballot now open
The Tank Stream - the stream upon which Sydney was found, which isnow buried beneath the CBD - is now open for tours. People need to apply via Ballot (so it is a luck of the draw if you get a chance to tour it). I did it last year with Sydney Water. Great Fun. Info here:
http://sydneylivingmuseums.com.au/2014/02/05/ballot-tank-stream-now-open