​Think Tank South is home to over 10 of the best tattoo artists in Colorado Located in the heart of downtown Littleton. Our artist are diverse in all styles of tattooing ranging from bold and colorful American traditional to detailed realistic black and grey tattoos. There are no projects too big and elaborate, or too small and simple for our artists to undertake. To schedule an appointment for a custom tattoo or inquire about a walk-in tattoo please visit our shop at 2506 Main St. #200, Littleton CO, 80120.