Yokohama is Japan’s second-largest city and its most historically international. The port opened to foreign trade in 1859 and has never entirely closed. The result, a century and a half later, is a city with over 100,000 registered foreign residents, the country’s largest Chinatown, international schools that have operated for decades, hospitals with English-language support built into their standard intake process, and landlords who have been renting to foreigners long enough to have stopped treating it as unusual.