Nick and Nora Charles driving to the front of their hilltop home, (which was never shown because it’s Coit Tower) in ‘After the Thin Man’ (1936). This is the parking lot of the tower, and a statue of Columbus now occupies the turnaround in the middle. The urn balustrade from the film shot was considered unsightly, and was eventually removed.
After circling the parking lot, Nick and Nora’s chauffeured car stops at, presumably, the front of their home. The bottom of the staircase that leads to Coit Tower is on the left in both pictures.
San Francisco Film Locations Then & Now 