Renton, Washington: Lovely Sewage Plant Grotto
Artistic environments along pleasant trails on top of what otherwise would be just a water treatment plant.
Waterworks Gardens
- Address:
- 1200 Monster Rd Southwest, Renton, WA
- Directions:
- Waterworks Gardens, next to King County's South Treatment Plant.
- Hours:
- Dawn-dusk (Call to verify) Local health policies may affect hours and access.
- Phone:
- 206-684-2400
Visitor Tips and News About Lovely Sewage Plant Grotto
Reports and tips from RoadsideAmerica.com visitors and Roadside America mobile tipsters. Some tips may not be verified. Submit your own tip.
A very detailed stone and marble mosaic grotto designed by an artist. Part of the Waterworks Park in Renton WA. Built by King Co. Water treatment plant.
[Michael Anway, 12/15/2008]Nearby Offbeat Places



Latest Tips Across Roadside America
Catch up on the latest discoveries from the road.
Explore Thousands of Oddball Tourist Attractions!
Unique destinations in the U.S. and Canada are our special obsession. Use our attraction recommendation and maps to plan your next road trip.
Open since 1996, there's also a bit of a monolith/henge arrangement. The beautiful public sculptures are artfully dappled among algae-covered ponds filtering stormwater....