When I visit Chicago, I always take a Chicago Architecture Center walking tour -- and this one on Art Deco design was a delight. We loved our guide, Marsha: knowledgeable, passionate about sharing these spectacular buildings' histories, facades and interiors. She gave us the opportunity to view up-close the opulent, breath-taking lobbies and public spaces of these gems. She took good care of our safety as we crossed the busy downtown streets, and kept us enthralled with amazing stories.