Fodor's Expert Review Cruachan

Like the lair of a classic James Bond villain, this triumph of 20th-century British technology lurks deep within a vast man-made cavern. Hidden 3,000 feet beneath the slopes of Ben Cruachan, the colossal water-driven turbines of this subterranean power station, completed in 1965, supply clean energy to much of Scotland. The ½-mile bus ride from the surface to the generating hall is a surreal experience, made all the more so by the subtropical plants that thrive under artificial light in the warm, humid atmosphere.