New York City

New York City is a city in New York state of the United States of America.

Cannonically
New York City is the residence of both Anne and Leo. It is where Overlord first launches his main attack on humans, and his base is set up on top of the Empire State Building once the city has been cleared of humans.

Later, Kate and Anne live together, as Felix finds out in PDae2. However, he and Kate never really meet until towards the end, as Kate is only a resident in name due to her duties in the military.

In PDae2, it is finally destroyed and, as later shown in PDae3, turned into the new and final castle of Overlord, District 000.

Reality
In case you're incredibly dense, New York City is a real city. It has obviously never been invaded by daemons, nor conquered by Satan. However, the Bethesda fountain is real, as is it's location in Central Park.

Trivia

 * The first destruction of New York occurs on November 11, 2010.
 * One could say that, in a sense, the only reason nothing happens on that to us is because after Leo reversed time, he cleared the factor of Overlord's being from the timestream.
 * New York City is later finally oblitered on January 2, 2033, and turned into District 000 exaclty one year later after Overlord completes his conquest of the universe.