The theme park, located 19 miles from Washington, D.C., is home to the world’s third-oldest wooden roller coaster.{ai:summary}<p>It appears that no content has been provided for summarization. Please provide the text or topic you would like summarized.</p>

Six Flags America shutting down Maryland park — home of one of the oldest rollercoasters in US — in ‘portfolio’ revamp: ‘Deeply disappointing’

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