I love maps: the old paper ones and the new online ones (GPS is a godsend if you don't have a sense of direction!). But the old ones are obsolete technology - which on this tile, is half-buried under a digital map. While I was in Turkey, I saw ancient Greek mosaics peeking out from under the edge of 'newer' Roman mosaics. That incredible, literal overlapping of historical layers sang to me, and has influenced my art.
The underlying map here is a digitally printed image of an early mosaic map of Jerusalem (for a textile artist, manipulating images in Photoshop and then being able to print the results on cloth is the most fun you can have that doesn't involve sex or chocolate). A digital map of the same part of the city, also printed on cloth, forms the top layer.