I am searching for the right name for those old-fashioned, very wide poster/add poles. Here's one, e.g.:
They are often shown in movie depictions of the Victorian era, with an umbrella-like roof.
It seems too wide to be called a pole and it's not a typical billboard or poster wall, because it's circular. I'm guessing there must be some word that was used (or still is) to address this object.
I searched Wikipedia entries on advertisement and poster history, thinking it might be mentioned somewhere, but I couldn't find anything.