The big buzz in the podcast world is the new series from the BBC A History of the World in a Hundred Objects.
Every episode, the host takes an object from the British Museum and talks about its importance for fifteen minutes. The podcast itself is immensely fascinating, but the website that accompanies the series is a marvel. There you can look at the objects such as this Sumerian clay tablet:
and the impressively user-friendly web interface allows you to zoom in to see astonishing detail.
Some of the objects have interesting backstories, and then prove to be even more interesting when you can see them, like this four-thousand year old cape that was hammered from a single ingot of gold.