NYC is also by far the largest and most complex subway system. The larger stations are built as underground, multilayered labyrinths. Times Square/Port Authority Bus Terminal is probably the worst offender -- it's two stations linked by an underground tunnel that services most of the subway lines in Manhattan (1/2/3, A/C/E, N/Q/R, 7, and the crosstown shuttle). Walking from the shuttle platform to the bus terminal feels like you're walking half a mile, and you go up and down several staircases and make several turns in the process.
