To prepare and build the Olympic Park in Stratford, East London for the 2012 Games:
1.5 cubic metres of soil had to be cleaned of oil, tar, arsenic and lead;
30,000 tonnes of silt, gravel and rubble had to be removed from the site;
16,000 beds, 22,000 duvets and 22,000 pillows had to be brought to the site;
4,000 trees were planted (as well as 350,000 wetland plants, 74,000 other plants and 60,000 bulbs);
2,000 newts had to be relocated;
220 buildings were demolished;
and 160 cats and kittens were rescued from the site.