How Tokyo became the world’s largest megalopolis, home to about 37 million people

1829-1879

1829

50 km

50 miles

1880-1929

1880

1930-1979

1930

1980-2014

1980

1829-1879

1880-1929

1880

1829

1930-1979

1980-2014

1980

1930

50 km

50 miles

1829-1879

1880-1929

1930-1979

1980-2014

1829

1880

1980

1930

50 km

50 miles