Canada
Every logged mystery in this country.
- Quebec
Allan Memorial Institute
In January 1973, on the order of CIA Director Richard Helms, the agency destroyed the bulk of its MKULTRA records. Records that survived tied the CIA to Dr. Ewen Cameron's "depatterning" experiments in this Mount Royal mansion, which the agency paid for in part from 1957 through a front called the Society for the Investigation of Human Ecology. On July 31, 2025, a Quebec judge authorized former patients and their families to sue Canada, McGill University, and the Royal Victoria Hospital as a class.
- Manitoba
Falcon Lake Incident Area
In 1967, a Winnipeg machinist prospecting for quartz said he touched a landed, disc-shaped craft in the Manitoba bush and was burned by it, leaving behind injuries doctors couldn't fully explain and what Canadian researchers still call the country's best-documented UFO case.
- Quebec
Memphre
A Magog diver spent 28 years collecting sightings on Lake Memphremagog and would only enter one in his file if the witness signed a declaration or recorded it on tape. He logged thousands of dives in the same water, more than 6,000 by his society's count, and never saw the animal himself.
- Northwest Territories
Nahanni Valley
In 1908, Charlie McLeod found his brothers Willie and Frank on a riverbank in what is now called Deadmen Valley. Both skeletons were missing their heads. The heads were never found, and the Scottish engineer who went in with them in 1905 was never accounted for at all.
- Nova Scotia
Oak Island Treasure
A small Nova Scotia island where a buried, booby-trapped shaft discovered in 1795 has driven more than two centuries of treasure-hunting, six known deaths, and theories ranging from pirate gold to Templar relics, without ever producing a confirmed treasure.
- British Columbia
Ogopogo
The Syilx called it N'ha-a-itk and left an animal in the water as payment before crossing. The English name comes from a music hall song performed in Vernon in 1924. In 2021, the City of Vernon, which had held the trademark for decades, voted to hand it to the Okanagan Nation Alliance for one dollar.
- Nova Scotia
Sable Island
A crescent of sand in the open Atlantic has wrecked over 350 ships, earning it the name Graveyard of the Atlantic. Wild horses have lived among the wrecks for more than 250 years, and Parks Canada believes they descend from animals shipped there in the 1700s.
- Quebec
Saint Joseph's Oratory
On the night of March 15, 1973, someone took Brother André's preserved heart from its locked vault at Saint Joseph's Oratory. It came back 21 months later through a Montréal lawyer, and nobody was ever arrested. The heart now sits at the center of an exhibition on his life, in the same shrine where pilgrims left crutches and canes in thanks for healings they credited to prayer to Saint Joseph in Brother André's time.
- Ontario
Screaming Tunnel
A limestone drainage tunnel outside Niagara Falls where, according to a century of local telling, a girl burned to death decades ago and still screams if you light a match at midnight inside it.
- Nova Scotia
Shag Harbour UFO Incident
On October 4, 1967, an RCMP corporal and six other witnesses reported an object with lights coming down onto the water off Shag Harbour. Rescue officials in Halifax "discounted" an aircraft or flares, a navy dive team found nothing, and Library and Archives Canada says the Department of National Defence "identified this sighting as unsolved."
- Yukon
Sign Post Forest
A homesick US Army private repainting a directional post at Watson Lake in 1942 added an arrow pointing to Danville, Illinois. There are now somewhere between 75,000 and 100,000 signs on the site, roughly 2,000 arrive every year, and nobody curates any of it.