ultramontane @ Worthless Word for the Day
conurbation @ Dictionary.com (so that's what the 'Golden Horseshoe' is ...)
This week's My Word! feature at the Classics Technology Centre is a handful of words describing undesireable traits .... Done With Mirrors does have a Carnival of the Etymologies this week, but there really isn't much ClassCon in it (most Hallowe'en-related words don't seem to have Classical origins).