An ancient, mossy bridge is the perfect complement to any rural or river scene. These old and mysterious arched bridges are mankind's way of traversing landscapes that are otherwise decidedly wild. Interestingly enough, an arch is only kept in position by its own weight – the stones supporting an arch couldn't possibly stay in their position without the stones above them weighing them down. So, while they were very effective and sturdy, their building process was complicated. This usually involved building an entire wooden framework underneath the bridge on which the arch could be rested until the rest of the bridge was built around it. Rakotz Brücke, Germany Devil's Bridge In Rhodope Mountains, Bulgaria Låtefossen Waterfall, Norway Multnomah Falls, Oregon, Usa Huangshan, Anhui, China Pindos Mountains, Greece Glenfinnan Viaduct, Scotland Mullerthal, Luxembourg Ronda, Malaga, Spain Gorge De L'areuse, Switzerland Gaztelugatxe, Spain Carrbridge, Scotland Stari Most, Bosnia And Herzegovina Root Bridge In India Ponte Gobbo, Italy Hermitage Bridge, Scotland Bridge Across The Merced River, Yosemite, Usa Tollymore, Uk Gapstow Bridge, New York, USA Misarela Bridge, Gerês, Portugal