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Reported phenomena — as catalogued
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Lake Superior Estate Marked by the 1977 Congdon Murders
3300 London Rd, Duluth, MN 55804
Research updated May 2026
Age
All Ages
Cost
$$
Standard mansion tour pricing varies by season; specialty tours (including the after-hours Nooks and Crannies and Flashlight tours) cost more.
Access
Limited Access
Historic stairs and multi-floor mansion; partial ground-floor access available
Equipment
Photos OK
Est. 1908 · National Register of Historic Places · American Country-Place Movement · Minnesota True-Crime History
Chester Adgate Congdon, an attorney who grew wealthy through Mesabi Range iron-mining interests, commissioned the architectural firm of Clarence H. Johnston Sr. to design a family residence on the Lake Superior shore east of downtown Duluth. Construction ran from 1905 to 1908. The completed estate covered roughly twelve acres and included a 39-room Jacobean Revival mansion, a carriage house, gardener's cottage, pier, boathouse, and formal gardens. The interior featured custom decorative work by the Tiffany Studios and the Herter Brothers.
Chester Congdon died in 1916; his wife Clara lived at Glensheen until 1950. The estate passed to their unmarried daughter Elisabeth, who lived in the house with rotating staff until her death. The Congdon family gifted Glensheen to the University of Minnesota Duluth in 1968 with a life estate for Elisabeth, who remained in residence.
On the night of June 26-27, 1977, Roger Caldwell — the husband of Elisabeth's adopted daughter Marjorie Caldwell Hagen — entered Glensheen and killed night nurse Velma Pietila with a brass candlestick on the main staircase before suffocating Elisabeth Congdon with a satin pillow in her second-floor bedroom. Caldwell was convicted of both murders in 1978; the Minnesota Supreme Court overturned the conviction in 1982 on evidentiary grounds, and Caldwell entered an Alford plea in 1983, effectively confirming guilt. Marjorie was tried and acquitted of conspiracy and aiding and abetting.
The University opened the mansion to public tours in 1979. For its first three decades the museum did not discuss the murders on tour; in the 2010s the institution shifted policy and now incorporates the case directly into its interpretive program. Glensheen is listed on the National Register of Historic Places.
Sources
Glensheen's paranormal reputation is anchored in the violence of June 1977. Visitors and museum staff over the decades have collected accounts focused on two specific locations: the grand staircase, where Velma Pietila was killed, and Elisabeth Congdon's second-floor bedroom, where her body was found.
Reported phenomena include the sound of footsteps descending the staircase when the upper floors are empty; cold spots along the staircase landing; doors that close on their own in Elisabeth's bedroom; and a recurring impression — described by multiple docents over multiple decades — of being watched in the upper-floor corridor. None of these reports have been the subject of a formal published paranormal investigation. The Northern Wilds Magazine feature on the mansion's reputation collects several first-person staff accounts.
Glensheen's official position is journalistic and family-aware: Elisabeth Congdon was a real person whose surviving relatives have made clear their preference for restrained treatment of the case. After-hours Flashlight and Nooks and Crannies tours discuss the murders and the staff folklore, but the museum's interpretive voice frames the reports as part of the estate's social history rather than as confirmed paranormal phenomena.
Notable Entities
Media Appearances
A docent-led tour of the 39-room Edwardian estate built for mining magnate Chester Adgate Congdon between 1905 and 1908. Interpreters cover the family's history, the design and craftsmanship of the house, and — for most of the museum's recent decades — the 1977 murders of Elisabeth Congdon and nurse Velma Pietila.
After-hours specialty tours move through the upper floors, attic, and servants' areas. Versions of the tour discuss the murders in more depth and visit rooms not on the standard route.
Self-paced walk through the estate grounds, including formal gardens, the boathouse, and the Lake Superior shoreline. No tour ticket required for outdoor areas during posted hours.
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