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I enjoy hiking across beautiful fields, but the effect of walking across the fields of Gettysburg is considerably different....
Hey, a battlefield was the best analogy I could come up with. Although most historic battlefields have been turned into manicured memorials, there are plenty that can capture your imagination, like the beaches of Normandy. You put it well: "part of history and a time capsule ...." DennisS, too: "There are artificial reefs and shipwrecks." Two different things.