Eventually, Mega-City One extended to Miami, Florida, which became a holiday resort, and spread west into Ohio and/or West Virginia. The megacity was built over the top of the old cities and the polluted Ohio River, creating the lawless Undercity, though a few buildings like the Empire State Building and Statue of Liberty were moved to Mega-City One for the tourists. Maps of the city show that in the early 22nd century, it stretched roughly from southern Maine down through Florida and to the north-east has absorbed the Quebec City-Windsor Corridor in Canada. 800 million citizens lived in the city at this point.