Jurassica is a planned visitor attraction in a disused quarry on the Isle of Portland, near Weymouth in Dorset, southern England. It is based on the Jurassic Coast, a World Heritage Site, and as a subterranean geological park, will largely present the prehistoric world. The attraction's location has been chosen as Yeolands Quarry, a now disused quarry that has been operational until the 21st century by Portland Stone Ltd. The quarry is 36 metres (120 ft) deep, 90 metres (300 ft) wide, and is on the eastern side of the island just south of The Grove village.
The £85–90 million project plans were unveiled in late 2013. Inspired by the Eden Project, which itself was built in an old clay pit in St. Austell, Cornwall, the attraction plans are to showcase hundreds of world-class paleontological remains, and these include dinosaurs, marine reptiles, marine invertebrates and plants. An aquarium is planned to be a part of the attraction, and other ideas include building aquatic tanks filled with animatronic models of prehistoric sea monsters. Other schemes involve taking visitors back in time, 140 million years ago, on a journey "flying around the Earth". The park has been described as about a third of the size of the Millennium Dome, and will be covered with a translucent, domed glass and steel roof spanning 350ft, which has been described as a "unique, lightweight translucent roof, much like a spider web, that will be almost invisible from outside". The site is also planned to be the world's first carbon-negative large visitor attraction, using solar panels to generate its own power, as well as reviving the park and ride scheme that was available during the 2012 Olympics within Weymouth and Portland area. Portland is being seen as ideal site at the centre of the Jurassic Coast, England's first natural World Heritage Site. The project, if completed, is said to create 200 jobs for the local economy.