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Keywords:America, District of Columbia, Dupont Circle Station, Metro, North America, TRANSPORTATION STRUCTURES, U.S., US, US Capitol, USA, United States, United States of America, Washington D.C., Washington DC, action, activities, activity, arch, arched, arches, architectural, architectural detail, architectural details, architecture, building, commute, commuting, design, motion, pattern, patterns, railroad, speed, station, structures, subway, symmetrical, symmetry, terminal, tracks, train, trains, transportation, tunnel, tunnels, underground
