Stop on this walk
Mars
East 42nd Street at Madison Avenue
📍 You'd struggle to spot Mars here if you dropped it on the ground. This corner also happens to be one of the classic photo angles on Grand Central's façade — worth a moment before moving on.
At true scale: 0.15 in (3.7 mm) across
About this place
412 feet out and 0.15 inches across. Turn around here — every stop so far still fits in one glance, and it never will again.
Next stop →
The next leg runs through the asteroid belt and is properly long: back toward Grand Central, then west along 42nd Street until the New York Public Library.
See the whole route →