That was another cornerstone of London's successful Olympic bid four years ago -- leaving a legacy.

CNN: London marks three years until Olympics

The eerie emptiness of Trafalgar Square is contrasted in the Times with a picture from 24 hours earlier when it was packed solid with cheering, flag waving crowds celebrating news of London's successful Olympic bid.

BBC: 10 THINGS WE DIDN'T KNOW THIS TIME LAST WEEK

Escadaria Selaron has been designated a city landmark and featured in the video promoting Rio de Janeiro's successful bid for the 2016 Olympic Games.

BBC: Rio de Janeiro landmark artist Jorge Selaron dies

It's been so successful that it was asked to contribute images for the Olympic bid.

BBC: NEWS | Programmes | Working Lunch | Bidding for gold

"You have to look in considerable detail at, not just the sport itself, what it might offer to the Olympic Games, what it brings to the Olympic program, " said Lee, former director of communications and public affairs for London 2012's successful bid.

CNN: Perfect pitch: How to get a sport into the Olympics