Overnight Investigations in California
Ranked from the documented sites in the California index: 10 sites offering a bookable overnight paranormal investigation. Updated September 2026.
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Grants overnight or private investigation access (up to 12 hours). HauntBound identified 13 distinct published accounts at this museum site, across four kinds of published source. Two later publications retell those accounts. Reported phenomena include apparitions and cold spots.
Dates: Jan 15· · verified September 2026 -
Grants overnight or private investigation access (up to 6 hours). HauntBound identified one distinct published account at this former prison. Four later publications retell those accounts. Reported phenomena include apparitions and cold spots.
Out of season until April· April 1 to Aug 31· verified September 2026Seasonal: April 1 to Aug 31 -
Grants overnight or private investigation access (up to 6 hours). Three independent sources document this museum site, with a history reaching back to 1860, and an independent publication covers its reports. Reported phenomena include electrical anomalies and phantom sounds.
Year-round· · verified September 2026 Book this investigation -
4. San Fernando Pioneer Memorial Cemetery Sylmar · Cemetery / Burial Ground · Family Comfort: ModerateGrants overnight or private investigation access (up to 4 hours). Three independent sources document this burial ground, with a history reaching back to 1874. Reported phenomena include cold spots and phantom footsteps.
Check for dates· Check availability -
6. Junipero Serra Museum / Presidio Park San Diego · Museum / Historical Site · Family Comfort: ModerateGrants overnight or private investigation access (up to 6 hours). Three independent sources document this museum site, with a history reaching back to 1929. Reported phenomena include apparitions and cold spots.
Not currently scheduled· · verified September 2026 Check availability -
Grants overnight or private investigation access (up to 8 hours). Three independent sources document this working hotel, with a history reaching back to 1915. Reported phenomena include apparitions and cold spots.
Year-round· · verified September 2026 Book this investigation -
Runs hosted after-hours investigations inside the building (up to 3 hours). Seven independent sources document this historic home, with a history reaching back to 1886, and three independent books, broadcasts, or markers cover its reports. Reported phenomena include apparitions and cold spots.
Check for dates· · verified September 2026 Check availability -
9. Star of India (Maritime Museum of San Diego) San Diego · Museum / Historical Site · Family Comfort: HighRuns hosted after-hours investigations inside the building (up to 1 hours). HauntBound identified four distinct published accounts at this museum site, across five kinds of published source. Five later publications retell those accounts. Reported phenomena include cold spots and phantom footsteps.
Check for dates· · verified September 2026 Check availability -
Runs hosted after-hours investigations inside the building (up to 3 hours). HauntBound identified six distinct published accounts at this historic home, across four kinds of published source. Eight later publications retell those accounts. Reported phenomena include apparitions and cold spots.
Year-round· · verified September 2026 Book this investigation