This little tractor train takes you to & from the Biomes & the Visitor Centre.
Most people walk down & get the train back up again. It is quite a drop in to the quarry to the Biomes.
Be prepared for queues to get to the top . It is a pleasant Zizzag walk up though what is called to outside Biome Gardens.
Again to save your legs a tractor train can be taken from the visitors centre to the Biomes themselves.
Alternatively its an easy 5-10 minute walk down the paths - and when this area is fully mature is a pleasanter option. So much o the outside section - our temperate Biome - is still being developed and different plants will be in bloom at different seasons.
The majority of visitors come by coach and car. There are several big coach park, situated at the top of the site, all named after various fruits. From the coach park there are buses availbale to take you down to the visitor's centre. Not only useful for the less mobile but also there is a lot of walking to whilst in the Eden Project so they recommend you use the transport available and give you more time to see the biomes.