A garden with no flowers?
The landmark you seek is a modern office and retail space that was originally designed for a different purpose by architect Otto A. Deichman in 1949. Although no longer used as intended, the building maintains evidence of its original mission through a fun vintage exterior, artfully preserved.
The building is often admired for its bright neon marquee and sign, which gaily illuminate its patch of Willow Glen every night.
Although the interior was gutted to bare walls before being re-purposed, many original painted murals by the Anthony B. Heinsbergen Decorating Company were saved and relocated to other venues.
A Critical Clue or p'raps a Red Herring?!
For reading this far, you've earned a word to the wise.
The answer you seek may be found... hung inside.