The England layer is far more detailed, with supplemental information from the addition of attributes to its data table (Link and Time period).  It also holds more images and even a YouTube video (see the Bodleian Library pin).

The only real trouble I encountered was the number of layers the map would accommodate.  When trying to add another route, the option was greyed out, informing me that I’d reached my limit.  Other than that, the application was primarily intuitive and allowed me the freedom to manipulate it as I wished.

Post-publishing realization: The map automatically adds photos associated with the location after the photos (and singular video) that I linked to it myself.  I’m working to figure out how to disable these media that aren’t mine.