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Thomas Viaduct   (circa 1835)
Off Maryland Route 1 in Patapsco State Park
Baltimore, MD

Designed by Benjamin Henry Latrobe Jr., the 704-foot-long Thomas Viaduct, the oldest stone arch railroad viaduct in use today, was once the country's largest bridge and was the first built on a curve. It was named a National Historic Landmark in 1964.

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Baltimore Area Attractions

Natural History Society of Maryland
Cylburn Arboretum
Hampton National Historic Site
Baltimore Zoo
Peter Pan's Pirate Ship
St. Vincent de Paul Church
USS Constellation
Heritage Society of Essex and Middle River
Babe Ruth Birthplace and Orioles Museum
National Aquarium in Baltimore


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