![](https://s4745.pcdn.co/wp-content/uploads/2017/09/Union-station-denver-300x199.jpg)
By Justin Sablich | The New York Times
Cities like Boston, Chicago, New York and San Francisco, with their extensive public transportation systems, have long been go-to destinations for carless travelers. But a few unexpected locales have joined the list, thanks to new and expanding transit options. In honor of Car Free Day — Friday, Sept. 22 — take stock of these old (and new) pedestrian-friendly American destinations.