2.1 

Darling Harbour past the Pyrmont Bridge is called Cockle Bay. 

More restaurants, bars, nightclubs, the IMax Theatre is there and some nice sculptures. 

By the way if there are any steps, do explore. Most of them are open to the public, even if it looks like being part of a restaurant. The view from there is superb. 

Behind Cockle Bay is a park with a great play ground, fountains and a stage. Lots of events are happening there, often finishing with  fireworks. A little further on but still in Darling Harbour is the beautiful Chinese Gardens, so tranquil.

But I keep close to the waters edge, and walk around to the west side of Cockle Bay, 

past the Convention Centre and the Harbourside Shopping Centre,

and back to Pyrmont Bridge.

Of course I had to walk across the bridge and back again.