Doyers Street bends ninety degrees in the middle of a single block — the only true curve in the Chinatown grid, and the reason nineteenth-century reporters called it the Bloody Angle. That crook of pavement explains the district better than any map does. Three neighborhoods meet across roughly twenty walkable blocks below Delancey Street, and a Lower East Side Chinatown and Little Italy Food Tour crosses every one of those borders inside an hour. The boundaries were drawn by arrival. Orchard Street carried more than a thousand licensed pushcarts by 1900, most of them run by Eastern European Jewish families packed into tenements like 97 Orchard, built in 1863 and later preserved as a museum. Sicilian and Neapolitan households filled Mulberry and Elizabeth Streets in the same decades. Cantonese merchants had already settled Mott Street from the 1870s, ringing what had been the Five Points, cleared in 1897 for the ground that is now Columbus Park. Four immigrations, one square mile. Proportions have shifted since. Little Italy has contracted to a core of Mulberry Street between Canal and Broome, roughly three blocks, though the Feast of San Gennaro has run there each September since 1926. Chinatown expanded in the opposite direction, absorbing East Broadway and the streets beneath the Manhattan Bridge, and its Fujianese population now outnumbers its Cantonese one. Neither neighborhood ever stopped moving, which is why a Manhattan Chinatown walking food tour looks different every year. Lower East Side Chinatown and Little Italy Food Tour tours trace that pressure line directly: the block where hand-pulled noodle counters give way to pastry cases of cannoli shells is the same block where two migrations met and held. The architecture records the same layering. The Eldridge Street Synagogue opened in 1887 with a Moorish Revival rose window of sixty-seven panes, and stood roofless for decades before its restoration. Two blocks west, the Beaux-Arts colonnade of the Manhattan Bridge approach was completed in 1915 by Carrère and Hastings. At Chatham Square, the Kimlau Memorial Arch has marked Chinese-American war dead since 1962. Cast-iron cornices, fire escapes and hand-painted bilingual signage do the rest. A Little Italy and Chinatown tasting walk is therefore an exercise in reading façades as much as menus. Nothing here was built for visitors. Lower East Side Chinatown and Little Italy Food Tour tickets buy guidance through a working neighborhood rather than admission to a monument; the streets themselves carry no entrance fee at all.