Why go
Park Avenue is best seen around Grand Central Terminal, where railroad history, sunken tracks and the elevated viaduct explain the avenue's unusual form. The corridor's formal width and changing names south of Midtown add useful context to an architecture or transit-focused walk.
The full story
Park Avenue was once called Fourth Avenue and carried the New York and Harlem Railroad. In the nineteenth century, the tracks through Murray Hill were gradually covered and later sunk out of sight north of Grand Central, reshaping the street into the broad avenue seen today. Around Grand Central Terminal, the Park Avenue Viaduct splits around the station and the former Pan Am Building, making the transport infrastructure visible in the street plan. South of 32nd Street, the road is called Park Avenue South; farther south, it becomes Union Square East and then Fourth Avenue. The avenue's planted medians and formal width can feel purely decorative, but the rail route beneath is what explains the corridor's origin and unusual construction.
Useful to know
- Start at Grand Central Terminal to see the viaduct and the avenue's rail-based history most clearly.
- For a longer walk, remember that the street changes names south of 32nd Street.