Harold indulges in a somewhat unusual pastime - attending funerals of complete strangers. It was at just such a ceremony that he catches his first glimpse of Maude.
Then ... A sombre gathering finds solace in the priest's homily.
... and Now, this scene was filmed in the Holy Cross Catholic cemetery on Mission Road in Colma (map), a small town south of San Francisco that was founded in 1924 as a necropolis. Most of its land consists of cemeteries and its modest living population of 1,800 is outnumbered by the buried by a factor of over one thousand. Unsurprisingly the older gravestones are exactly as they were but additional memorials have since been added in the foreground row. The coffin above was at the Hanlon memorial stone in front of the Kirwan gravestone cross.
This location is in section 'T' at the spot marked by the arrow.
Harold is distracted by the sound of a sneeze from amongst the gravestones ...
Then ... He sees a little old lady (Ruth Gordon) next to a tall tree munching on an apple. She seems to be following the proceedings as intently as he.
... and Now, a recent look at the same spot behind the Donovan memorial stone reveals a notable absence, the tree.
Holy Cross Cemetery is the final resting place of several notables, perhaps the best known being Joe DiMaggio whose mausoleum can be found nearby in section 'I'.