This public garden opened in the Southern US in 1976. Where are we?

This public garden opened in the Southern US in 1976. Where are we?

A Disney World
B Yew Dell Botanical Gardens
C Atlanta Botanical Garden

The garden opened three years after Atlantans proposed a botanical garden and has been expanding its attractions and educational offerings ever since. Our homepage image shows the Garden Lights, Holiday Nights exhibit that runs through the holiday season.

The correct answer is Atlanta Botanical Garden.