In the early 20th century, the well-to-do who wanted to stay within the city instead of decamping to newly fashionable suburbs may have ended up in Fieldston.
There's only one way to escape Manhattan that's solely for pedestrians (and bicyclists): the High Bridge, which spans the Harlem River between Washington Heights and the Bronx.
Image source: MTA (click here for a larger image/pdf)
Currently the MTA is in the midst of a proposal to introduce Metro-North train service to the east Bronx, using Amtrak’s Hell Gate line (cool photos here). Four new stations are also being considered for this transit-light area, including the vicinities of Morris Park, Co-op City, Hunts Point, and Parkchester. These stations would provide connections to Penn Station, Westchester, and Connecticut.