Entry No. 162 — the Denver file — filed under: castle ruins
Mount Falcon 'Summer White House' Ruins
“he tried to fund by asking the nation's schoolchildren to mail in their pennies”
At the end of Walker's Dream Trail sits a marble cornerstone and foundation — all that remains of John Brisben Walker's quixotic plan to build a 22-room presidential castle on a Colorado mountaintop, a project he tried to fund by asking the nation's schoolchildren to mail in their pennies. The ruins sit at 7,851 feet in Jefferson County Open Space, surrounded by sweeping views of the foothills and the Denver basin.
The story
In 1911, John Brisben Walker—a restless entrepreneur who bought Cosmopolitan magazine, invested in Stanley Steamer automobiles, and built the early stage at Red Rocks—decided the President of the United States needed a 22-room European-style castle hanging off a cliff at 7,851 feet. Designed by Denver architect J.B. Benedict, the proposed "Summer White House" was touted as a grand gift from the people of Colorado to the nation's commander-in-chief. On July 4, 1914, Walker laid a heavy slab of Colorado Yule marble for the cornerstone, pitching a fundraising campaign so ambitious he asked American schoolchildren to mail in their pennies to finance the presidential retreat.
The kids didn't send enough pennies, President Woodrow Wilson declined to give the project his backing, and Walker's grand scheme stalled before a second stone was placed. To make matters worse, Walker's own 10-bedroom Italian-masonry mansion sitting just down the ridge was struck by lightning and burned to the ground in 1918, shattering his local fortunes. Today, that lonely marble cornerstone and a low stone foundation sitting off the Walker's Dream Trail are all that exist of the high-altitude fortress that never was.
The real weirdness of the site lies in the absurdity of its ambition. Standing at the windy precipice overlooking the Front Range and the Denver basin, you realize Walker actually expected early 20th-century heads of state to haul themselves up steep, unpaved foothill switchbacks by horse or steam car just to sleep in a fog-wrapped chalet on a cliff.
What it's like
Expect a brisk hike along Castle Trail to the Walker's Dream spur, where you'll find a covered wooden picnic shelter and the solitary marble cornerstone jutting over the cliff edge. If you take the shortcut from the West Trailhead in Indian Hills—a roughly 3-mile round trip—you'll have to navigate a strict 20 mph residential neighborhood to reach a small parking lot that routinely fills up early on weekend mornings. The exposed summit offers zero shade and bakes under the midday sun, so aim for early morning or golden hour. There is a pit toilet near the trail, but no running water anywhere in Mount Falcon Park, so bring your own supplies and watch for mountain bikes sharing the trail.
The move: Hike the Castle Trail from the East Trailhead (roughly 2 miles each way, easy to moderate) to visit both the Walker Mansion ruins and the Summer White House cornerstone — read aloud the historical marker text about the penny-mailing campaign, then spread out a picnic at the nearby shelter with panoramic views before hiking back at golden hour.
📍 Before you go Two trailheads reach the ruins, and the choice matters. The West Trailhead (21074 Mt Falcon Rd, Indian Hills) is the shortcut — roughly 3 miles round trip — versus the longer climb from the East Trailhead in Morrison. You reach the west lot by driving slowly through a 20 mph residential neighborhood, so be respectful; it's small and fills early on weekends, so arrive in the morning. There's a pit toilet just down the Castle Trail but no water, so pack your own. Late spring through fall is ideal; the exposed summit bakes midday, making early or golden-hour visits best. Pair it with Red Rocks and downtown Morrison just below.
- 📍 Morrison
- 💸 Free
- ⚡ Up for anything
- 🌗 Outdoors
Where: East Trailhead: 3852 Vine St, Morrison, CO 80465 (West Trailhead: 21074 Mt Falcon Rd, Indian Hills, CO 80454)
Hours: Mined 2026-06-07 — confirm current hours before you go.
Pair it with
- Walker Mansion Ruins and Unfinished Summer White House — Located along the exact same Castle Trail hike, these lightning-gutted stone fireplaces are the remnants of John Brisben Walker's personal 10-bedroom estate.
- Morrison Natural History Museum — Sitting right at the base of the foothills in Morrison, this compact museum lets you swap 20th-century presidential follies for real dinosaur trackways.
- Tiny Town & Railroad — Just a short drive south down Highway 285, this collection of 100+ miniature hand-built structures offers another wonderfully eccentric foothill obsession.
- Piggin' Out Smokehouse — A low-key red house in nearby Lakewood serving slow-smoked brisket, ideal for refueling after hauling yourself up Mount Falcon.
Good to know
How do I reach the Summer White House ruins?
Hike the Castle Trail in Mount Falcon Park from either the West Trailhead in Indian Hills (about 3 miles round trip) or the East Trailhead in Morrison (a steeper 6-mile round trip), then turn onto the Walker's Dream Trail spur near the picnic shelter.
Why was the Summer White House never finished?
John Brisben Walker failed to secure federal backing or enough private donations, including his failed campaign soliciting pennies from schoolchildren. The project was completely abandoned after his nearby personal mansion burned down in 1918.
Are there amenities like water or restrooms at the site?
There are pit toilets near the West Trailhead and along Castle Trail, but there is no drinking water available anywhere in the park.
What else can I see on the same hike?
Just under a mile away on Castle Trail sit the stone fireplace ruins of Walker's 10-bedroom mansion, along with views of Red Rocks Amphitheatre and the Denver skyline.
Plan a visit & invite your people →
Further reading: jeffco.us · hmdb.org · denvergazette.com · Atlas Obscura
last checked: 2026-06-07