I decided to return to Greenwich Park at the weekend. As it was a Sunday I was able to park the car which meant I had the time and energy to walk from the park over to Docklands. From the top of the park you have a good view of the skyscrapers of Docklands.
Docklands is across the River Thames from Greenwich and can be reached by walking through the tunnel under the river. This rotunda is the entrance on the south side. There is a similar one on the other side.

The tunnel opened in 1902 and is 370m long. It was built to give people easy access to the docks. There are steps and lifts down to the tunnel. There are fewer steps on the north side than on the south side of the river. I stopped counting when I got to 100!
Looking back towards the Cutty Sark in Greenwich.
This is Millwall Park with the arches of an old railway line on the right and the ventilation shafts ( I think) of the Docklands Light Railway on the left.
Unusual to see a full quota of rental bikes.

Canary Wharf is not looking so far away now.
I walked beneath the Docklands Light Railway to come out at one of the quays.

These flowers were growing from beneath the concrete wall of the quay. I have no idea what they are but they looked very impressive.
To me the buildings are built too close to one another.
I did come across one road of older houses.
Look at the height of this crane!
Canary Wharf tube station.

The roof garden above the new Canary Wharf Crossrail station, not the tube station above.
There are numerous sculptures to be found in the parks and in front of the buildings. Here's just a couple of them:
'Returning to embrace' by Jon Buck
'It takes two' by Bob Allen
I returned to Greenwich Park more or less via the same route. By the time I got back to the car I had walked 9 miles.