Entry No. 62 — the Seattle file — filed under: ruins
Dairy Barn Ruins
Located within Luther Burbank Park, these concrete ruins are the remaining foundation of a dairy barn and milk operation. The facility was run by the Luther Burbank School (originally the Boys Parental School), which operated from 1905 to 1965 as a residential school for youth. Today, the low concrete walls stand as a historic, moss-covered labyrinth that visitors can easily explore along the park's paved trails.
The story
Mercer Island is usually known for manicured waterfront real estate, not crumbling agricultural ruins. But if you wander off the paved trails in Luther Burbank Park, you'll step directly into the knee-high concrete foundations of an abandoned milk barn. Moss and ferns have thoroughly claimed the low concrete walls, turning what was once a working dairy facility into a silent, roofless maze sitting quietly in the trees near Lake Washington.
The history here isn't a idyllic family farm story—it's institutional. From 1905 to 1965, this land was occupied by the Luther Burbank School, originally established as the Boys Parental School. It operated as a residential institution for young boys, where daily life revolved around vocational farm labor. The boys tended livestock, milked cows, and processed dairy right on these concrete pads to keep the facility self-sufficient.
When the school closed in 1965, the grander buildings were demolished or repurposed, but the heavy concrete groundwork of the dairy barn proved too stubborn to remove. If you look closely around the park, you'll spot other ghost traces of the institution's grid—including an inoperative brick steam plant near the waterfront plaza and the old school parade grounds near the park flagpole.
What it's like
Finding the ruins requires zero bushwhacking. Follow the Luther Burbank Park Loop trail as it curves near the shoreline, and you'll find the low concrete labyrinth sitting just off the paved path, complete with a historic marker explaining the site. Just keep in mind that plugging the official street address into your GPS will drop you on a private residential street—park in the main municipal park lot instead and make your way down to the waterfront trail on foot.
The move: Take a scenic stroll along the Lake Washington waterfront on the Luther Burbank Park Loop, stopping to read the historical marker and photograph the mossy concrete foundations.
📍 Before you go The ruins are located inside Luther Burbank Park, a public municipal park, and are legally accessible via the park's trail system (though the provided address is a nearby private residence).
- 📍 Mercer Island
- 💸 Free
- ⚡ Low-key
- 🌗 Outdoors
Where: 1950 82nd Ave SE, Mercer Island, WA 98040, USA
Hours: Added 2026-07-20 — confirm current access before you go.
Pair it with
- Ford Slope Mine — Trade concrete dairy foundations for subterranean industrial history by heading east into Bellevue to see the remains of Cougar Mountain's chief coal mine.
- Hat 'n' Boots at Oxbow Park — Pair Mercer Island's hidden municipal concrete ruins with a surreal 1950s roadside relic preserved inside a small Georgetown park.
- Bill Speidel's Underground Tour — Swap overgrown open-air foundations for the subterranean subterranean storefronts buried beneath Pioneer Square after the 1889 fire.
Good to know
How do I locate the ruins inside the park?
Park in the main public lot for Luther Burbank Park and take the waterfront loop trail down toward Lake Washington. The ruins sit right alongside the trail system.
Is it legal to explore the foundations?
Yes. The ruins sit entirely within a public city park and are legally accessible along the public trail system.
What was the Boys Parental School?
It was a juvenile residential facility operating from 1905 to 1965 (later renamed after horticulturist Luther Burbank) where boys lived and worked on the self-sustaining farm.
Are there other historic structures nearby in the park?
Yes, you can also see the school's old brick boiler building down near the waterfront plaza and the former administrative building.
Plan a visit & invite your people →
Further reading: mercerislandhistory.org · mi-reporter.com · mymercerisland.com · letstalk.mercergov.org · 10adventures.com
last checked: 2026-07-20