Bonnie Castle is a two-story Victorian-era mansion built in 1896 and furnished with period antiques. The building is listed on The National Register of Historic Places. It is located within the Metro Atlanta area, Grantville Downtown Historic District, a short drive traveling south on GA Highway I-85, exit 35. Bonnie Castle is a unique Victorian vacation giveaway known for comfort, relaxation, and Southern hospitality. This small town neighborhood is quiet, a hidden gem of Metro Atlanta off the beaten path. You may hear the occasional sound of a passing train whistle or musical church bell chimes.