Beneath the streets of Midtown Manhattan lies a secret rail siding few New Yorkers know about: Track 61. Originally built in the 1910s as part of Grand Central’s service yard, it once hauled coal and ash. But when the Waldorf Astoria rose above it in 1931, the track was reborn as a private platform—linked directly to the hotel by a massive freight elevator. Over the decades, it carried generals, presidents, and celebrities into the Waldorf’s back halls. Franklin D. Roosevelt himself used it, whi