The City Hall building stands in the background
P.S. Pillory is the english word for the portuguese 'pelourinho'. It consists of a stone column where people were tied for public punishment and humiliation. You can see them at the main square of almost all old towns in Portugal (and Brazil). Despite the awful practice, some of them are truly beautiful stone works.
However if you look for the english definition of pillory you'll find: "a device formerly used for publicly punishing offenders consisting of a wooden frame with holes in which the head and hands can be locked".