UTS Library

Interior Architecture: Images

In this guide:

Google Arts & Culture - A pretty cool free database of images drawn from galleries and museums worldwide. High quality scans.

ArtStor is a database of images of artworks  and design objects. It's not terribly large but what is here is a high quality rendering of the original and has good annotations.

The Pattern Library - cool patterns!

Stock Images
These websites are worth a look if you need stock images:
New Old Stock
IM Creator
Startup Stock Photos