Invisible Days, or the Legend of the White Crocodile [Unsichtbare Tage oder Die Legende von den weißen Krokodilen]
- Release Year
 - 1991
 - Runtime
 - 1h 27m
 - Genres
 - Documentary
 - TV Movie
 
- Directed By
 - Eva Hiller
 

In her essay film, Eva Hiller illustrates the nightly infrastructure of a large city, using Frankfurt am Main and Berlin as examples. Just as pet reptiles gone feral are reported to populate New York's sewers, so too is there bustling activity – often invisible to outsiders – when darkness falls on Germany’s metropolises.