For a small museum in The Hague, Netherlands we have developed a site
using Quixote. It is mostly in Dutch, so a lot of it won't make sense to
English speakers, but you can ogle the pretty pictures.

The content is mostly Medieval Manuscripts, I find it cool to look at
stuff that was written hundreds of years ago, the oldest ones are from the
year 1000!
There are about 12000 images, all cross-referenced and classified with the
very nifty Iconclass art classification system.
(http://www.iconclass.nl/)
All the data is stored in a RDF-like triple store, based on Sqlite. The
intention is to provide RDF export facilities at some stage, but I still
have to wrap my head around exactly what/where/how.

Temporary link over here:
http://www.mnemosyne.org/mmw_edu/
it will be moving to the domain of the museum itself at some stage.

I thought it might be interesting for other Quixote users to have a look.

My thanks to the Quixote guys for sharing their very nice framework with
the rest of us.

cheers from a happy user,

Etienne Posthumus
Mnemosyne
Amsterdam, Nederland