Photo: National Maritime Museum
Those curious tiny houses on wheels are bathing machines, a movable contraption popular in beach resorts in the 19th century:
... bathing machines allowed women to change their clothes in private, reach the waters without parading through open stretches of beach in their bathing suits, and then frolic about in relative privacy and without violating contemporary notions of modesty. Queen Victoria certainly had one, and like it, these caravans of propriety, of social mores too foreign for our contemporary eyes, were simple wooden structures. Lest they invite voyeurs, they were built without windows, otherwise there were little ones inaccessible to prying eyes. Some were made of canvas and still others were very luxurious affairs, but all of them were on wheels, pulled in and out of the surf by horses or brute human power.