I went on the James River Park System PipeLine walk and it was amazing!! You walk on the pipe that brings the water to your house in the city of Richmond. Part of the PipeLine is metal catwalk with hand rails and the rest is pipe. There is a beach next to you as you walk the PipeLine, you travel under the CSX Viaduct and sometimes you are just over the river. You can also see the Blue HeronRookery across the river from the PipeLine or the beach. The James River is cleaner than it has been in past years. Great Blue Herons have come back to the rookery in large numbers because they are healthy. The mother herons throw the young out of the nest so the young can learn to fly.
You should check out this blog post all about the PipeLine: