Olympic Park, London

The London Olympic Park was built for the 2012 Olympic and Paralympic games. It included  80000 seat stadium, eight sports venues and facilities for spectators and the world’s media.
For four weeks during the summer of 2012, the site was the center of the whole world’s attention! But it was actually designed and engineered as much for its legacy (how it could be used afterwards) as it was to host the Olympics and Paralympics. 
This 2.5 km2 of land in the east of London is now being transformed into the Queen Elizabeth Olympic Park. The venues are being removed or converted to a new use and the extra space will provide new parkland and space for 5,000 new homes.
The main arena will become a smaller multi-purpose stadium, while the Aquatics Centre has had its seating capacity reduced to become a community swimming facility. The basketball and handball arenas have been dismantled entirely and the venue for cycling will reopen as the Lee Valley VeloPark.
All the venues were built with distinct designs and involved many different projects. But these were all managed very efficiently so everything was delivered on time and to budget for the Games.
A structural highlight is the roof of the Velodrome which uses a lightweight cable to support its steel roof. As well as giving crowds an uninterrupted view of the action by removing any column supports, the roof design also used less material and saved £1.5m.
4,000 trees were planted in the Olympic Park and 300,000 wetland plants along the Lee Valley which runs through the site, while 98% of construction waste was reused, recycled or recovered.