Podcast:99% Invisible Published On: Tue Aug 26 2014 Description: Cities, like living things, evolve slowly over time. Buildings and structures get added and renovated and removed, and in this process, bits and pieces that get left behind. Vestiges. Just as humans have tailbones and whales have pelvic bones, cities … Continue reading → Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.