In 2015, artist Olafur Eliasson designed the Circle Bridge (Cirkelbroen) to span a canal in central Copenhagen. The pedestrian bridge was designed to slow people down a bit:
The bridge is made of five circular platforms, and it contributes to a larger circle that will form a pedestrian route around Copenhagen Harbour, where people — cycling, running, walking — can see the city from a very different perspective. As many as 5,000 people will cross this bridge each day. I hope that these people will use Cirkelbroen as a meeting place, and that the zigzag design of the bridge will make them reduce their speed and take a break. To hesitate on our way is to engage in bodily thought. I see such introspection as an essential part of a vibrant city.
Small boats can travel easily under the bridge but a section of the bridge also swings gracefully away to let larger boats pass. (via greg allen)