Oh yes, we remember the Gimbel's Passageway well: Most notably for the problems it caused the LIRR.
The white tile passage was located under the north sidewalk of 33rd Street (if I recall correctly) and ran from the 7th Avenue Subway Concourse, after ascending three steps, all the way to the 6th Avenue Subway. It had closed concessions, twists and turns and boarded up showcase windows for the department stores lining the street. It housed musicians, bums, reprobates and urinators. It leaked rain from the sidewalk in such huge quantities that no traveler could discern the origin of the liquids through which he waded.
The Passageway was owned by the PRR through the Pennsylvania Terminal Company which was later acquired by Amtrak. As such, the NYC Police, the TA Police, the Port Authority Police and the LIRR Police refused to patrol it. Since it had no direct connection to anything patrolled by the Amtrak Police they didn't want to know it was there and its safety (as well as any type of maintenance and cleaning) was ignored.
It became a dangerous, dirty and smelly hell hole.
After several passengers were knifed, slashed and assailed, and the sidewalk began to fall in, it was closed in the early 1990's.
I have no idea where the one-legged man with the accordion went.