Scottie sneaks into the rear of Podesta Baldocchi, the flower shop, and spies Madeleine inside. The shop was at 224 Grant Avenue near Union Square (map). One reason director Hitchcock reportedly chose this shop was because he liked its distinctive Italian tiled floor. Kim Novak hated this grey outfit and when she complained about it to Hitchcock he reportedly told her "You can wear any color you want so long as it's grey".
Then ... later in the movie Scottie is shown in front of the shop.
... in 1958, this vintage photo shows how Podesta Baldocchi looked when the movie was filmed.
... and Now, 224 Grant Avenue today houses a contemporary clothing store, 7 For All Mankind. Along to the right is Ashburton, the alley Madeleine turned into when Scottie followed her to the shop. Since leaving here Podesta Baldocchi continued in business at a number of addresses and is currently to be found at the Flower Market at 644 Brannan; it also offers deliveries via its website.
The coastguard has found a body floating in the bay, dressed as a porter. Quine recognizes him as one of those who participated in the lineup, presumably eliminated by the drug ring to keep his mouth shut.
Then ... Note the Palace of Fine Arts in the center of the far shore.
Below, a Google satellite view of the location. The scene was filmed on the coastguard pier near Crissy Field in the Presidio not far from Fort Point. Doyle Drive crosses at bottom of the picture. The same pier is one of two seen in the view towards Crissy Field in the movie 'Dark Passage' .
The cab driver who was shot by the policeman as he made off with the bag in the opening scene has been identified as Lefty Jenkins - "... one of the best wheelmen on the coast". The police search his rented room "at 11 Kent Street" but don't find any evidence to identify the drug ring.
Then ... The police car heads up Mason Street towards Union from Filbert.
... and Now, this view, with Angel Island is in the distance, hasn't changed appreciably in over 55 years.
Then ... They turn into a narrow cul-de-sac. This is indeed Kent Street off Mason between Union and Filbert (map). What's with all of those newspapers on the street?
...and Now, the only significant change in this view is the house at the end of the street.
Then ... They enter from Kent Street, supposedly No. 11, but actually the rear door of a building which fronts onto Union Street ...
and Now ... the rear entrance has been replaced by a garage door.
The police tell Eleanor her husband Frank, still in hiding, suffers from a heart condition and should be found to make sure he is getting his medication. This is news to her and she goes to Frank's doctor for confirmation.
Then ... The California Street cable car crests the hill and she gets off at Powell.
... and Now, the building on the left, the University Club, has occupied this site since 1908. The view today down California is dominated by modern buildings but the Bay Bridge tower can still be seen.
She enters the doctor's office in the Alta Casa apartment building at 897 California on the corner of Powell. Just down the block, at 895 California, was the Crest Garage.
Then ...
... and Now, the garage, now a parking garage, has survived but the Alta Casa building has been demolished and is still a vacant corner lot.
... a contemporaneous photo ... this 1950s photo shows the same corner as it was when the movie was filmed. The Alta Casa building is on the corner and the signs tell us that the Crest Garage doubled as a Chevron gas station and car rental (U Drive) site.
... in 1968, the Alta Casa building also showed up 18 years later in the movie 'Petulia'. The entrance used for the doctor's office is clearly seen; note too the cable car signal booth on the corner from which an operator controls the crossing of the cable car lines.
and Now (update), after decades of this corner remaining (surprisingly) an empty lot, a swanky new condominium building has been built on it and the garage site next to it. Cable cars still pass by on California and on Powell and the manned booth is still there too.
Trivia, but related - here's a 1935 news photo showing the same signal booth after it was knocked over by a reckless driver (one wonders what happened to the signal man inside), with the entrance to the Alta Casa Building behind it.