The Natural History Museum of Los Angeles County sits in Exposition Park in Los Angeles, California, adjacent to the California Science Center. Wikipedia confirms it is the largest natural and historical museum in the Western United States, housing a collection of nearly 35 million specimens and artifacts spanning approximately 4.5 billion years of history. Beyond its famous exhibition halls, the museum maintains extensive research collections — including a significant mineral and gem collection — that support active scientific inquiry. It is also affiliated with the Page Museum at the La Brea Tar Pits in Hancock Park. Gates brought the controversial Mitchell-Hedges Crystal Skull to the museum's laboratory in Season 7 of Expedition Unknown, hoping a rigorous scientific test could settle long-standing questions about the artifact's authenticity and origins.
Natural History Museum of Los Angeles County opens to the public in Exposition Park
Frederick Albert Mitchell-Hedges reportedly discovers the Crystal Skull during explorations in Belize (then British Honduras), an account disputed by many researchers
Gates brings the Mitchell-Hedges Crystal Skull to the museum's lab for analysis during Expedition Unknown S07E06
The Natural History Museum of Los Angeles County's research facilities have long supported peer-reviewed scientific work across disciplines including mineralogy, geology, and anthropology. The museum's mineral and gem collection is considered a significant scientific resource, and its staff researchers have contributed to numerous studies of geological and archaeological specimens. When Gates visited in S07E06, the episode description credits museum scientist Dr. Aaron Celestian — identified as a mineralogist and geochemist — with conducting the analysis of the Crystal Skull, though the verbatim transcript provided does not include his on-camera remarks, so his specific conclusions should be understood as reported findings rather than directly quoted testimony.
The Mitchell-Hedges Crystal Skull has a contentious history within mainstream archaeology and materials science. Mitchell-Hedges himself claimed the skull was discovered at the Maya site of Lubaantun in Belize in 1924, though documentary evidence for this discovery is considered unreliable by most scholars. Previous scientific analyses of crystal skulls — including studies conducted at institutions like the Smithsonian and the British Museum — have generally found tool marks consistent with modern rotary equipment rather than hand-finishing techniques available to pre-Columbian craftspeople, suggesting manufacture in Europe during the 19th or 20th century.
The episode's framing reflects Gates' characteristic approach: presenting himself not as a debunker but as someone genuinely curious about what the evidence will show. As he put it heading into the test, he was hoping to 'convince' Homann to allow 'a definitive scientific test.' That openness to the outcome — whatever it might be — is what distinguishes this kind of investigation from either credulous acceptance or reflexive dismissal. The reported finding of machine-polishing marks would align with the broader scientific consensus on crystal skulls, though the episode itself should be consulted for the full context of Dr. Celestian's on-camera conclusions.
The museum's role here illustrates something worth appreciating: major natural history institutions actively engage with popular historical mysteries precisely because the scientific tools exist to test them. Bringing a contested artifact into a working research lab — rather than leaving the debate to speculation — is exactly the kind of evidence-grounded approach the museum's mission supports.
The museum's collection encompasses nearly 35 million specimens and artifacts, according to Wikipedia — one of the largest such holdings of any natural history institution in the United States.
Its holdings span approximately 4.5 billion years of Earth history, from early geological formations to contemporary biodiversity specimens.
The museum is affiliated with the Page Museum at the La Brea Tar Pits, and the two institutions share a common mission centered on inspiring 'wonder, discovery, and responsibility for our natural and cultural worlds.'
Previous scientific analyses of crystal skulls at other major institutions — including the British Museum and the Smithsonian — found evidence of modern tool use, a finding that broadly aligns with what Gates' episode reportedly uncovered at this museum.
The Natural History Museum of Los Angeles County is generally open to the public in Exposition Park, with ticketed admission and free days typically offered throughout the year — check the museum's official website for current hours and pricing before visiting. The museum's exhibition halls cover topics ranging from dinosaur fossils and gems to California history and biodiversity, making it a full-day destination for most visitors.
Los Angeles, California — the museum is located within the city itself, in Exposition Park near the University of Southern California campus.
Los Angeles enjoys mild weather year-round, so the museum is accessible in any season. Weekday visits during the school year tend to be less crowded than weekends or summer months.
Sac Balam
Sac Balam is connected to Gates' broader investigation into Mitchell-Hedges' expeditions in Belize, the same journey that produced the Crystal Skull now tested at this museum.
Guatemala Snake King Archaeological Sites
Guatemala Snake King Archaeological Sites reflect Gates' ongoing investigations into ancient Maya civilization, the culture at the center of the Crystal Skull origin debate.
Whydah Pirate Museum, Yarmouth
The Whydah Pirate Museum similarly appears in Gates' work as a scientific institution where contested historical artifacts are examined by researchers — a parallel to the museum's role in the Crystal Skull episode.
Historical data sourced from Wikipedia