The infamous No Name Bar in the wonderfully named No Name Key in the southern Florida Keys provides the required density in this week’s photo challenge.

Stop by for a beer and you’re encouraged to pin a dollar festooned with your own message, drawing or design to whatever spare space you can find – the greatest challenge you’ll encounter in this fun and typically Floridian hostelry, a must if en route to or from Key West.

As an added bonus, more density on display in Morocco – Djemma elFna in the heart of Marrakech, with the bustling market, and one of its food stalls up close.