When we first came upon these odd structures, while descending the many, many steps from the historic center of Valletta to our sailing ship, we had no idea what they were. (Guesses? Anyone? Anyone?) Only later did we find a small sign indicating that these formed part of a "cat café" with motel-like accommodations, available on a first-come, first-served basis (I bet) to any of the countless strays in the neighborhood.