I happend upon some remarkable satellite images of Bam, and then sought out some on-the-ground images too. Here's a basic description of the IKONOS images and more detail on the place from IranZamin, from Times of India, and from the Press-Democrat
Historians trace the founding of Bam to the early Persians, who ruled a vast region from the third century B.C. to the second century A.D. Bam became a famous Zoroastrian center; in a cave-like space, I saw the interior of the original fire temple. The Silk Route caravans stopped at Bam where walls protected traders from bandits. Fresh water from the oasis and intricate canals refreshed travelers and animals. Marco Polo was here before the Safavids, relative newcomers, who built the Citadel, the largest adobe structure standing in the world.

Bam had been deserted for two centuries until the 1950s when archeologists, architectural historians and workers began digging. They identified quarters for crafts and trades, discovered theaters and gaming rooms. Baths, a public forum and a Jewish quarter were unearthed. UNESCO declared Bam a World Heritage Site.

1 an IKONOS image of Bam, 2 a zoom-in version, and 3 a damage map, based on the imagery

The Fortress before the earthquake:

4     5     6     7     8     9     10 (traditionally, Marco Polo's view)

After the earthquake:

11     12     13