Tokyo Sesame Place was referred to on most signage as "Tokyo Sesame Place" which is a difference from Sesame Place in Langhorne, PA and Irving, Texas. Both of the US parks were just referred to as Sesame Place.
The spelling would be typed as:
Image from YouTube
Image from asahi-net.or.jp
Tokyo Sesame Place was located in the city of Akiruno which is a city within Tokyo Metropolis.