What place from a movie is the "Home of Happiness"?

Denton, Texas, featured in the 'Rocky Horror Picture Show'

The City of Denton is where Brad proposes to Janet in "The Rocky Horror Picture Show", and is also called "The Home of Happiness" on a billboard in the first scene of the movie in the churchyard. For a brief time in the early 1990's, a billboard was in place along I-35 north of the city that said the same thing, erected each year before Halloween.

https://en.wikipedia.org/wiki/Denton_County,_Texas

A notable aspect of the film production for this number is the cemetery next to the church with a billboard in the distance for comical effect. It depicts a large heart with an arrow through it with the words, "Denton, the Home of Happiness". Brad and Janet stand on opposite sides of the screen with the cemetery in the background and the billboard far in the back, but directly between each character as the song begins.

https://en.wikipedia.org/wiki/Dammit_Janet