The Biomes are an incredible examples of engineering - the Rain-forest Biome is the largest conservatory in the world and large enough to fit the Tower of London inside!
There are also hands-on exhibits too. There are den building materials such as bamboo poles, rope and coverings that the kids can use to build large dens either outside or inside the white den making building.
The Eden Project provides an excellent mix of engineering, art, ecology, ethics and education. It is incredible how creative minds have turned a disused clay pit into an amazing ecological environment.