HauntBound · Most Haunted Illinois · Overnight Investigations

Overnight Investigations in Illinois

Ranked from the documented sites in the Illinois index: 10 sites offering a bookable overnight paranormal investigation. Updated September 2026.

  1. Tinker Swiss Cottage
    1. Tinker Swiss Cottage Rockford · Haunted House / Historic Home · Family Comfort: High

    Grants overnight or private investigation access (up to 4 hours). HauntBound identified two distinct published accounts at this historic home. Four later publications retell those accounts. Reported phenomena include apparitions and cold spots.

    Dates: Sept 26 and Oct 10· verified September 2026 Book this investigation
  2. Peoria State Hospital (Bartonville Asylum)
    2. Peoria State Hospital (Bartonville Asylum) Bartonville · Asylum / Hospital · Family Comfort: Low

    Grants overnight or private investigation access (up to 10 hours). HauntBound identified four distinct published accounts at this former hospital site, across six kinds of published source. Five later publications retell those accounts. Reported phenomena include apparitions and cold spots.

  3. Roff House (Watseka Manor)
    3. Roff House (Watseka Manor) Watseka · Haunted House / Historic Home · Family Comfort: Moderate

    Grants overnight or private investigation access (up to 12 hours). HauntBound identified three distinct published accounts at this historic home, across five kinds of published source. Four later publications retell those accounts. Reported phenomena include cold spots and disembodied voices.

    Check for dates· verified September 2026 Check availability
  4. Cheney Mansion
    4. Cheney Mansion Jerseyville · Museum / Historical Site · Family Comfort: Moderate

    Grants overnight or private investigation access (up to 10 hours). Five independent sources document this museum site, with a history reaching back to 1827. Reported phenomena include apparitions and cold spots.

    By appointment· verified September 2026 Check availability
  5. Cambre House and Farm
    5. Cambre House and Farm Nauvoo · Haunted House / Historic Home · Family Comfort: Moderate

    Grants overnight or private investigation access (up to 16 hours). Three independent sources document this historic home, with a history reaching back to 1867. Reported phenomena include apparitions and cold spots.

    Check for dates· verified September 2026 Check availability
  6. Peoria State Hospital (Cottage B1)
    6. Peoria State Hospital (Cottage B1) Bartonville · Asylum / Hospital · Family Comfort: Low

    Grants overnight or private investigation access (up to 6 hours). Three independent sources document this former hospital site, with a history reaching back to 1902, and two independent books, broadcasts, or markers cover its reports. Reported phenomena include apparitions and disembodied voices.

  7. Villa Kathrine
    7. Villa Kathrine Quincy · Haunted House / Historic Home · Family Comfort: Moderate

    Grants overnight or private investigation access (up to 6 hours). Four independent sources document this historic home, with a history reaching back to 1901. Reported phenomena include apparitions and disembodied voices.

    Booking now· through Oct 17· verified September 2026Seasonal: Sept 12 to Oct 17 Book this investigation
  8. Franklin County Historic Jail Museum
    8. Franklin County Historic Jail Museum Benton · Prison / Reformatory · Family Comfort: Low

    Grants overnight or private investigation access (up to 6 hours). Three independent sources document this former prison, with a history reaching back to 1905. Reported phenomena include cold spots and disembodied voices.

    Check for dates· verified September 2026 Check availability
  9. Lincoln Square Theatre
    9. Lincoln Square Theatre Decatur · Theater / Performance Venue · Family Comfort: High

    Grants overnight or private investigation access (up to 6 hours). Three independent sources document this working theater, with a history reaching back to 1916. Reported phenomena include apparitions and cold spots.

    Check for dates· verified September 2026 Check availability
  10. Ashmore Estates
    10. Ashmore Estates Ashmore · Asylum / Hospital · Family Comfort: Low

    Runs hosted after-hours investigations inside the building (up to 4 hours). HauntBound identified two distinct published accounts at this former hospital site, across four kinds of published source. Four later publications retell those accounts. Reported phenomena include apparitions and cold spots.