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Track 61: The Mysterious Abandoned Underground Railway Beneath New York's Waldorf Astoria Hotel

Track 61: The Mysterious Abandoned Underground Railway Beneath New York’s Waldorf Astoria Hotel - Contrary to popular belief, the mysterious siding, known as Track 61, was never intended for use by the hotel’s more famous guests. It originated as part of Grand Central Terminal’s sprawling underground network of storage sidings, above which the iconic Park Avenue hotel was later developed through an air rights lease.