Inside a bullring arena in Madrid that will be turned into an Olympic stadium
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Madrid gets ready as 2020 Olympic host to be announced

4 September 2013 Last updated at 09:07 BST

Olympic officials in Buenos Aires are set to decide who will host the 2020 Games on 7 September 2013.

Madrid is going up against Tokyo and Istanbul.

Spanish authorities have already started spending billions of dollars on the construction of 35 projects - 80% of which have been completed.

There are hopes the investment will bring huge economic benefits for its recession hit economy.

Tom Burridge reports.