About Eden Project Built in a 160 year old exhausted China clay quarry near St Austell, Cornwall to mark the Millennium, The Eden Project is a fantastic place to come and explore. Come and see what they are offering at their world-famous attraction and practical advice on visiting. Their website - Edenproject.com helps you in so many ways from finding out when attractions open, seasonal dates, buying tickets, information on tour guided groups and group visits. If you book online the Eden Project give you an amazing 15% off original price! The Eden Project now also offers a 2 days FREE entry to the Eden Project if you book your accommodation using their accommodation provider.