On August 1, 1901, in New Orleans's Back o' Town Neighborhood Known as "The Battlefield"

New Orleans keeps a precise address for the start of American jazz: August 1, 1901, in the modest neighborhood locals called "The Battlefield." That is where Louis Armstrong was born, decades before his trumpet and voice carried the city's music into the wider world. Armstrong went on to become one of jazz's most significant figures of the 20th century, a legacy that still traces back to that single New Orleans block and that single date.

With reporting from The Collector.