"This set is a beast. I am an architect so I love the Lego Architecture Series having built most of the Frank Lloyd Wright sets. I think that the set is as close as you can get with Lego blocks without doubling the size of the build. I took my adult children to the Colosseum in 2014 so when I heard about the set, I had to have it. I would not recommend this set for anyone who is impatient and be very careful about orientation of pieces, it makes a difference. One reviewer said that it took them 10.5 hours. Either someone was handing them blocks or they were taking caffeine through an IV. 20 hours is a more reasonable expectation, but really what is the rush. Enjoy it. I heard that there may be a set for the Grand Hotel on Mackinac Island, bring it on!"