The perfect way to explore Sydney! A 2-day twin Explorer ticket gives you unlimited access to the Sydney Explorer and Bondi Explorer hop-on, hop-off tour buses as well as travel on the entire Sydney Buses network. Sydney Explorer stops at 26 famous locations, 20-min service frequency, 2-hr round trip. Bondi Explorer stops at 19 harbor and beach locations, 30-min service frequency, 2-hr round trip.