Next time you'll be going to a conference in Europe it will be held in a 300 year old hotel that used to be a palace. Or maybe it's 500 years old? Are those columns real or are they just for show? Why are there gargoyles on the roof, and why does the next building over have a dome made of bricks? Come to today's UDLS talk to learn about different architectural styles, and get an answer to a question you never knew you had: what's a buttress?