Aquila the Eagle is home to the bright star Altair, which forms one corner in the Summer Triangle. Look for it in the evening sky from July to November.
Vulpecula the Fox is a small constellation inside the Summer Triangle. Amateur astronomers go here to spot the Coathanger Cluster and the Dumbbell Nebula.
Hercules the Strongman is a great constellation to view in Northern Hemisphere summer. With binoculars you can see Hercules' remarkable star cluster, M13.