Megapixel

Here's a shot of the mosaic on the floor of St George's church in
Madaba. It was huge (17 meters x 7 meters), old (560 AD),
informational (covered all of the holy sights from modern day Egypt,
Jordan, Israel, and Syria), and intricate (approx 1.5 million pieces
of stone). Only a third of the original remains... but it is very
impressive. The photo is zoomed in on Jerusalem.