Northampton became the principal shoemaking centre in England in the 19th century, its population increasing from just over 26,000 in 1851 to more than 87,000 in 1901. Factory production began in the late 1850s, and many characteristic 3-storey factory buildings remain, adapted as apartments or put to other uses. Northampton has scarcely any of the garden workshops characteristic of Kettering, only 20 km distant. Some small-scale manufacture of high quality shoes continues. The museum displays an internationally-significant collection of shoes and of shoemaking machinery.