Watch the sunlight sparkling on the water as it flows over Killen Falls. Keep an eye out for any rainbows that form in the mist.
You'll have no end of sightseeing choices in Tintenbar. Killen Falls is an ideal place to start here, but there are numerous other interesting sights to consider. Macadamia Castle, Ballina Racecourse, and Seven Mile Beach are close to the cascade of water and and will cap off your day nicely.