Just remember the Eden Project was built on a disused 160 year old clay quarry.
And I know they had to raise millions of pounds to develop the site and pay for, a build, the huge biodomes.
The biodomes are huge, as it says on the Eden Project web site "You could fit the Tower of London in the Rainforest Biome. The Guinness Book of Records heralds the Biomes as the biggest conservatories in the world"
You can read about the development of the site here
http://www.edenprojec...0th-birthday-timeline
Hats off to Tim Smit, the person who kicked the whole project off and worked hard to raise the money and develop the site.