The Eden Project is one of the world's largest botanical gardens and a working centre for environmental education, built inside a reclaimed china clay pit near St Austell in Cornwall, south-west England, and opened in 2001. Its signature sight is a cluster of giant bubble-like geodesic domes, called Biomes, that recreate an entire tropical rainforest and a Mediterranean climate under cover. Since 2023 it has heated its Biomes and generated electricity from on-site geothermal energy, so it reads less like a theme park and more like a living lab for sustainability. It makes an ideal half-day to full-day highlight of any Cornwall trip.
Rainforest Biome — one of the largest indoor rainforests in the world, with growing bananas, cocoa, coffee and rubber, a treetop Canopy Walkway and a waterfall that make you feel deep in the jungle.
Mediterranean Biome — a warm, dry dome of gnarled olive trees, vines, citrus and fragrant herbs, with brightly coloured flowers from the Mediterranean, California, South Africa and Western Australia.
The Core and the 'Seed' sculpture — an education building whose roof echoes the phyllotaxis (spiral leaf patterns) of plants, centred on Peter Randall-Page's 70-tonne carved granite Seed.
Outdoor Gardens — vast landscaped planting draped across the old clay pit, dotted with sculpture and changing with the seasons; don't rush past the views outside the domes.
The dome architecture and geothermal story — the ultralight ETFE hexagonal-cell Biomes are an engineering marvel in their own right, and the geothermal heating is a great sustainability talking point.
Good to know
RulesPre-booking a timed entry slot online is effectively essential; entry is not guaranteed without it and slots sell out during UK school holidays (summer and October). A standard ticket converts into an annual pass giving a year of unlimited entry, so keep your receipt or QR code.
SafetyThe Rainforest Biome is deliberately hot and very humid (feels 30°C+ in summer). Dress in light layers, and skip the high Rainforest Lookout or Canopy Walkway if heat affects you (a cool room is provided). Adventure add-ons like the SkyWire zip line and high ropes have age, weight and health limits and require closed shoes and active clothing.
SeasonSummer peak is busy, so arrive at opening for a calmer visit. From around October the site turns on its winter ice rink and Christmas market, so what's on varies by season. Cornish weather is changeable — bring a waterproof for the outdoor gardens.
MannersDon't touch or pick the plants, and keep to the marked paths. This is a conservation charity's learning space, so a quiet, respectful pace is appreciated.
MannersUK cafés and restaurants often add a service charge (typically 10–12.5%) to the bill. Check your receipt before adding a further tip so you don't pay twice.
CautionBuy tickets on the official site (edenproject.com) for the best price and to avoid overpriced third-party resellers or on-site touts. For taxis, use the official station rank or pre-book a reputable, metered firm.
Practical info
By public transport, take a Cornish Main Line train (e.g. from London Paddington) to St Austell, then bus 26, 28 or 101 for the roughly 25-minute ride to Eden; taxis are also available at the station. By car there is free parking and EV charging at Bodelva, St Austell, PL24 2SG. Parking opens at 9am and the domes at 10am, closing around 6–8pm depending on the season, with last entry one hour before closing (closed 25 December and some maintenance days in Jan–Feb). Prices and hours change, so always confirm the latest details on the official website before you go.
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