Godzilla is located on top of the Shinjuku Toho Building. Here is a link to a web page with information on it.
Toho Cinemas is the Japanese film/cinema company responsible for the creation and theatrical distribution of Godzilla's films.
On top of the building is a cafe/restaurant. Seeing Godzilla is free but like anything "free" you must enter the cafe, place an order for coffee or a light snack, to be able to walk out on the terrace (through the cafe) and be terrorized by one of cinema's greatest creatures conceived. It's worth the vist.
