“The reason why there’s a huge Godzilla at this park in Kanagawa is because in the first Godzilla film, the beast emerged out of the ocean at a nearby beach, known as Kanonzaki. To mark this, there was a Godzilla slide erected at the beach in 1958, which probably inspired other, far less impressive Godzilla slides on Japanese playgrounds throughout the country.
The slide at Kanonzaki fell in to disrepair by the early 1970s. You can, however, still see “Godzilla’s footprint” at the shore. A new, far more impressive version of the slide was built at nearby Kurihama Flower Park in 1999. It still stands today.”