Crazy Crimes - School Holiday Activity Saturday 10 April - Sunday 26 April, 2021. Did you know it is illegal to sing an obscene song in public? You can be fined and even sentenced to two months imprisonment! These school holidays, visit the Adelaide Gaol to hear about quirky crimes and learn about one of the oldest remaining colonial public buildings in Adelaide, with over 300,000 prisoners passing through its doors during its working years. The Crazy Crimes activity trail will take you all through the Gaol and is the perfect outdoor activity for kids (and a fascinating day for adults!). Free with entry, bookings are available online.