Manchester Museum began in 1821, when the Manchester Society of Natural History bought the collection of John Leigh Philips and put it on display at Peter Street. The Geological Society's collection joined in 1850. By the 1860s both societies were running out of money, and on the recommendation of the evolutionary biologist Thomas Huxley, Owens College agreed to take the lot. The college commissioned Alfred Waterhouse, the architect of London's Natural History Museum, to build a new home on Oxford Road; it opened in 1888. Three Waterhouse generations would eventually extend the frontage. The 1912 wing was paid for by the textile merchant Jesse Haworth to house Egyptology; the 1927 wing was added for the ethnographic collections. A two-storey extension and new galleries arrived in 2023, the conclusion of a £15 million programme that closed the museum for eighteen months and reopened it to 52,000 visitors in a single week.

On the first floor, a gallery designed by the Brussels firm villa eugenie asks visitors to think about what nature means to them. A demoiselle crane stands in a glass case beside a piece of rubble from the Hiroshima blast and hundreds of paper origami cranes folded in tribute. A red panda nearby was collected in the Himalayas by Brian Houghton Hodgson. A male and female huia, both extinct, sit not far from bones of the great auk, the dodo, and the ivory-billed woodpecker. The single known egg of the slender-billed curlew is here. The warbler finch on a small mount was collected by Charles Darwin on the Galapagos in 1835. Among living animals, the Vivarium on the second floor holds critically endangered neotropical frogs - lemur leaf, yellow-eyed leaf, splendid leaf - in captive breeding programmes linked to conservation work in Costa Rica and Panama.

Ancient Worlds, which opened in 2012, fills the 1912 Egyptology wing. The collection is one of the great Egyptological holdings outside London, anchored by finds from Flinders Petrie's excavations at Kahun and Gurob that Jesse Haworth and Martyn Kennard donated in 1890. Winifred Crompton, the first keeper of the wing, set the tone. In 1973 Rosalie David started the Egyptian Mummy Research Project here, applying radiology and endoscopy to mummies as a way of reading ancient health and disease without disturbing the bodies. In 1975 the team performed the first complete unwrapping of a mummy in Britain since 1908: mummy number 1770. From 1979 the work shifted to non-invasive imaging, and the data still feeds the International Mummy Database. Worsley Man, a bog body found in Chat Moss, lies in storage; Lindow Man visited from the British Museum in 2008.

In November 2019, Manchester Museum returned 43 secret, sacred, and ceremonial items to Aboriginal and Torres Strait Islander communities in Australia. In September 2023, it returned 174 more objects to Indigenous Australians, including carvings, baskets, and a major collection of shell dolls received from the Anindilyakwa women at a ceremony in the museum. Krista Pikkat, UNESCO's director for culture and emergencies, called it inspiration for other institutions. The Manchester Gallery itself now explores how the collections were assembled, where they came from, and how they connect to colonialism and empire; the 2007 Myths About Race exhibition opened that conversation, and Belonging Gallery and the South Asia Gallery - the first permanent UK exhibition space dedicated to South Asian communities, developed with the British Museum - opened in 2023.

The numbers are unreasonable. The Manchester Herbarium contains around 950,000 plant specimens, including some from Carolus Linnaeus and from Darwin's Beagle voyage. The entomology collection holds nearly three million specimens and includes one of the only three known specimens of the Manchester moth, captured on Kersal Moor in 1829. The bird study skin collection runs to 15,000 specimens from over 2,000 species. The mollusc collection is the fourth-largest in Britain. The geology galleries hold 40,000 mammalian bones from Creswell Crags. And then there is Stan: a reproduction cast of the second-most-complete Tyrannosaurus rex ever excavated, named for Stan Sacrison who found the original in South Dakota in 1992. Stan greets visitors on the ground floor with the kind of theatricality that started this story. The statue still spins, occasionally. Brian Cox still has his theory.