I had some fun adding maps and photographs to the latest episode of Moonpain Revisited – a little audio walk through the streets of Lisbon along with a few stories from Pessoa’s Lisbon recounted by Peter Poulsen (in Danish).
They’re displayed in podcast apps such as Castro (my personal favorite) and Overcast (also really good, and with a version for iPad) that support dynamic chapter artwork.
Apple’s Podcast App does support chapter artwork, but unfortunately only for images connected to chapter headings.