Differences and similarities

AZN Stadium, Sydney, Australia

London Olympic Stadium, London, United Kingdom

The 1st photo is similar then to the 2nd because in both was celebrated the Olympics and Paralympics Games: the O. games were held . At In the 1st, Olympics and Paralympics Games, Sydney 2000, and at In the 2nd, Olympics and Paralympics Games, London 2012.
One of the differences is, the 1st stadium'shape is oval and the 2nd is circular.
Other of the difference Another difference is, ANZ Stadium is more older than London Olympic Stadium.
The other both similar are that in they play football.: Another similarity/ thing that they both have in common is that football is played in both.