Ballarat was occupied by indigenous people until the 1800's when European settlers began to arrive and establish pastoral properties. In 1851 gold was discovered and a gold rush ensued that the town infrastructure was unable and unprepared to cope with. The Governor sent police and troops in and imposed a policy of gold mining licences ( £2 for every 3 months prospecting).
The diggers rebelled against the licence police and demanded a tax on discovered gold to replace it. The upshot was a rebellion at Eureka when the diggers shut themselves into a stockade and an ensuing massacre by police and troops in 1854. It is seen as a significant event in Australian's history, and is outlined in the Eureka Museum in Ballarat.
The cynics amongst us would suggest that the trigger factor was a drunken brawl followed by a witch hunt which has been glorified over the years to suggest it was a victory for the underdog against the oppressors, but as I am not at all cynical.....
Meanwhile...back to Lake Wendouree . There is a 1919 Melbourne tram which has been restored and the tram line runs around the lake.
The tram driver looks like a man who was born to drive vintage trams or steam trains (probably the Hogwarts Express).