LA's oldest surviving adobe and Historic-Cultural Monument #1 — home of a notoriously cruel land baron whose 1889 death under wagon wheels was never fully explained.
23537 Calabasas Rd, Calabasas, CA 91302
Research updated June 2026
Age
All Ages
Cost
$
Museum admission charged; see website for current pricing
Access
Wheelchair OK
Historic adobe with some uneven surfaces; call ahead for accessibility needs
Equipment
Photos OK
Est. 1844 · Los Angeles Historic-Cultural Monument #1 · Oldest Surviving Adobe in LA County · Basque Rancho History · Chumash Historical Connection
The structure at what is now 23537 Calabasas Road was built as a two-room adobe around 1844, during the Mexican period, by a Chumash worker or rancho family — the original builder is not definitively documented. Miguel Leonis, a Basque immigrant who arrived in California around 1858, took possession of the property in the 1870s and expanded it substantially in 1879 into the Monterey Colonial form that survives today. The Los Angeles Cultural Heritage Board designated it Historic-Cultural Monument No. 1 in 1962 — the first structure to receive the designation.
Leonis was a physically imposing man — accounts put him at six feet three inches — who built his rancho holdings through a combination of legal manipulation, intimidation of smaller landowners, and aggressive litigation. Contemporary records describe him as domineering and violent toward workers and neighbors. He and his common-law wife, Espiritu Chijulla, a Chumash woman who had been widowed before Leonis's arrival, lived at the adobe together for roughly two decades. Leonis never formally married Espiritu, which created the conditions for the property dispute that followed his death.
On September 20, 1889, Leonis was returning from Los Angeles when he fell — or was thrown — from his wagon. The wagon wheels passed over him. He died from his injuries the same day. Espiritu and her supporters immediately raised the question of murder; Leonis had recently been in bitter legal conflict with neighbors and business rivals, and the circumstances of the fall were not explained to her satisfaction. No criminal charges were filed. Espiritu then faced years of litigation over the estate from Leonis's relatives, who argued their common-law marriage gave her no legal standing. She ultimately prevailed and kept the property.
The adobe opened as a museum in 1963, the year after receiving its landmark designation, and has operated continuously since. Leonis Adobe Museum is now the steward of the structure and grounds, including the relocated Plummer House and original outbuildings.
Sources
The Leonis Adobe appears on multiple Southern California haunted-location lists and has accumulated visitor reports over the decades since it opened as a museum. The accounts are consistent in their geography: most anomalous experiences are reported on or around the second floor, added during the 1879 expansion, and in the rear grounds.
Phantom footsteps on the second floor are the most commonly reported phenomenon. Visitors on the main floor have heard clear, measured steps overhead when no one was upstairs. Staff members working the building after hours report the same pattern. Cold spots that do not correspond to drafts or HVAC patterns are reported in the upstairs rooms. A persistent, specific detail — the smell of soap or lye, the kind used in 19th-century laundry operations — has appeared in multiple independent visitor accounts over the years.
Sounds of digging from the grounds after closing are reported periodically, attributed by some to activity near the outbuildings. The digging accounts are less consistent than the upstairs footsteps and may reflect the adobe's settling in Los Angeles's seismic environment.
The apparitions described most consistently are a large male figure on the staircase or upper hallway — described in terms that align with Leonis's known physical description — and a woman in period dress on the upper floor, identified by guides and visitor tradition as Espiritu. The identification is speculative but persistent.
What the historical record provides is a documented death of uncertain cause, a property dispute fought by a Chumash woman who was not treated with dignity by the legal system, and a building old enough to have absorbed a great deal of history within its walls. Whether that amounts to a haunting is a matter of interpretation; the visitor accounts have been too consistent over too many years to dismiss without engagement.
Notable Entities
Guided tours of the 1844 adobe and 1879 Monterey Colonial addition, with period furnishings, the original rancho buildings, and the restored Plummer House on the grounds. The second floor — where Leonis and Espiritu are said to walk — is included on standard tours.
Every HauntBound history is researched from documented sources. We clearly separate verified historical fact from paranormal folklore.
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