In French, everything has a gender, so you have to know if the beautiful object in question is male or female. The male version of it's beautiful would be, c'est beau, and the female version is c'est belle.
Beautiful France' is 'Belle France' in French.
beautiful death -> belle mort
tu es belle
belle femme
Belles femmes
la belle (beautiful) le chiot (puppy)
belle la vie
ma belle reine
Très beau.
belle vue
"Le noir est beau."
simplement beau, simplement belle