These photos were taken during a walking tour of New York City subway art. Some if it so special, it brought a tear to my eye.
More photos can be seen in the set on Flickr.
Famous hats at 28th Street — Lillian Russell, Prima Donna Soprano
Union Square subway: Names of the 9/11 victims (artist unknown). The woman in this photo was in my tour group, and she was scanning the names (which were in alphabetical order) for the name of her cousin. When she found him, we had all caught up, and a quiet and teary moment came over our small group.
42nd Street — ‘Times Square Mural’ — art by Roy Lichenstein
One line of a poem, beam by beam
Times Square Subway/42nd St subway station: ‘Return to Spring’ by Jack Beal, 2001, glass mosaic
‘Losing my Marbles’, by Lisa Dinhofter, 2003, Glass Mosaic
28th St Station, in honour of what once was the ‘toy district’
Man contemplates escaping the grind and running away to the circus — ‘The Garden of Circus Delights’, by Eric Fischl, 2001, Glass mosaic
‘Life underground’ bronze sculptures by Tom Otterness. A comment on capitalism and the little people.
Times Square/42 St station: the tourist
You can read more about the tour here.
Amy Feldtmann 
Wonderful! I must take this tour.