I saw this article today:
The essence of each of these techniques centered around building rich associations in the mind. It’s hard to remember isolated facts, figures and data points, but when they’re tied to a broader network of associations, the more likely such data will be to stick in the memory.
Our memories feed on context, and one of the most powerful contexts — perhaps because our hunter-gatherer ancestors relied so heavily on recalling details of locations — is physical space. The loci method, used by ancient orators to memorize the order of long speeches, typically involves visualizing the layout of a well-known building, and then assigning the item of information being stored to a virtual location, such as a room in that building (your “memory palace”).