The Green Millennium by Fritz Leiber

The cab had just hummed past Monstro Multi-Products' blindingly bright basement show windows, behind which a file of dress-display robots marched in an endless figure eight with considerable realism and oodles of suede-rubber glamor, when Juno hunched forward and growled to the driver to stop. She had been silent during most of the ride, as if the whiskey had gone sour in her, and now when Phil made a move to pay she impatiently motioned him aside. He hopped out willingly enough, suddenly eager to see what the Akeley place looked like, as if his hopes and fears had started rotating again when the wheels of the cab stopped.

Juno's reference to "the temple" had half led him to expect Greek columns or an Egyptian portal. Instead he was facing an oblong of darkness, framed by the sidewalk, show windows some distance to either side, and the underpinnings of the two upper streets. He crossed the sidewalk and hesitated, as if he stood on the edge of nothingness. It was really very black, even for the bottom level. The sodium moon had set.