Between 1607 and 1814, there were a total of seven major frost fairs held on the frozen River Thames in the heart of London. These fairs hosted bull-baiting, pop-up pubs, and even saw a king or two taking part in the festivities!
(Added as a matter of curiousity, not to divert or disavow the our very real AGW.) This occurence is usually blamed on the 'Little Ice Age' ... cause still uncertain. The LIA is implicated in 500 years of misery for many Europeans. https://en.wikipedia.org/wiki/Little_Ice_Age
Glad to hear that! I've got that problem too! Sometimes it takes hours to find the way out ... hours free of social media, boring or horrifying news (real or fake) ... today it was the Medici family history ...