Here's a few of my favorites:

Zookazam - by the folks of AtlantaAR LLC - allows viewers to interact with some 42 animals - seeing them in a panoramic view. Students can learn all about the animal and it's habitat and even get a selfie with the animal for kicks! Check mine out! We've used this experience with all grade levels at my school - for K & 1st grade friends learning about animals, what better way than to enjoy this experience and see the animal first hand! With 2nd thru 5th, our students learning about Augmented Reality, saw if from this clear leader in the field! I've been a fan for years now!
Earth AR is another favorite to explore a variety of views of our planet Earth! The viewer is also able to get a good look at normal mapping, cube mapping, reflection mapping and more. For fun, we took selfies 'holding' Earth in our hands - students loved that!
After getting a good look and interacting within these fun favorites - students then create their own AR experience by using Aurasma - we bring pictures, videos and more to life as we explore the possibilities and it's made super simple with this program. All that is needed is a still image as the marker and then content to layer (or augment) from that image. Students will pick from a variety of topics - digital citizenship, geography, Colonial America, state symbols and history, the week's vocabulary words, pieces of amazing art or their favorite sport - the possibilities are endless! These are then displayed in our Labs and hallways for all to view!This....is a great idea!