“View from the roof of George Ehret's home at Park Avenue and 94th Street. Looking northwest, showing High Bridge and water tower in the distance.”

At right, the Park Avenue Tunnel at 97th Street. The New York Central and Hudson River Railroad lowered the tracks into what was originally called the Yorkville Tunnel from 59th Street to 96th Street between 1872-1876, at the same time that the final destination of the trains —the original Grand Central Depot— was being built.