Image by Jenny Dettrick Getty Images
This ornamental lake was created in 1963 when the 33m-high Scrivener Dam was erected on the Molonglo River. It's lined with important institutions and monuments, including the National Carillon and Captain Cook Memorial Water Jet. You can cycle the entire 28km perimeter in two hours or walk it in seven. Alternatively, you can split the route into smaller chunks by judicious use of the two main bridges.