Every step is labelled twice: what you do (from the operator's or the MTA's own visitor information, or assumed) and where (placed from a public map, or assumed). Indoor layouts are not official building data.
- The selected landmark (the other ten in a softer tone)
- Your route: current step dark blue, next steps light blue, done grey
- Subway entrance: stairs (dark), street elevator (blue, step-free), in-building passage (grey); a ring marks your route's exit
- In 3D, pins mark the entrances; your route's is larger, in the start colour. Tap one to start from it
- Security turnstiles
- Subway platforms under the selected station (OpenStreetMap)
- Underground passages, where OpenStreetMap maps them
Every step is labelled by its evidence: official source (NYC, MTA or the operator's own visitor information), rebuilt from public maps (OpenStreetMap), or scenario (assumed). "What you do" and "where" are labelled separately: a step can be officially documented while its exact position inside is approximate.
Tower exteriors are built from OpenStreetMap 3D building parts; Avery Hall and the Columbia campus come from the city's own 3D model (NYC 3-D Building Model, 2014), on ground built from USGS LiDAR and the city's surveyed spot heights. Every Manhattan building comes from NYC Building Footprints. Facade patterns and colours are stylised unless a source gives the material.
Route evidence tables → · Data quality report →
Step photos: Wikimedia Commons contributors (author and licence on each photo). Data: NYC Open Data (Building Footprints, 3-D Building Model, Planimetric elevations) · USGS 3DEP and LiDAR · MTA Subway Entrances and Exits 2024 · © OpenStreetMap contributors (ODbL).