Spectacularly set in a former china-clay pit, this garden presents the world's major plant systems in microcosm. The crater contains more than 70,000 plants—many of them rare or endangered species—from three climate zones. Plants from the temperate zone are outdoors, and those from other zones are housed in hexagonally paneled geodesic domes. In the Mediterranean Biome, olive and citrus groves mix with cacti and other plants indigenous to warmer climates. The Rainforest Biome steams with heat, resounds to the gushing of a waterfall, and blooms with exotic flora; the elevated Canopy Walkway enables you to experience a monkey's-eye view of all of it. The emphasis is on conservation and ecology, but is free of any editorializing. A free shuttle helps the footsore, and well-informed guides provide information. An entertaining exhibition in the visitor center gives you the lowdown on the project, and the Core, an education center, provides amusement and instruction for children—if you can drag them away from the zipwire and giant swing. There are open-air concerts in summer and an ice-skating rink in winter. The Eden Project is 3 miles northeast of Charleston and 5 miles northwest of Fowey. There's frequent bus service from Fowey to St. Austell.