If you are making the obligatory visit to Garni and Geghard, you should take the opportunity to visit the Garni Gorge. It is only possible for those who can walk down, or have a car, since buses do not go down to the bottom of the gorge ordinarily. At the bottom you will see some magnificent sheer vertical cliffs, which look manmade. It is nice and green with a stream and an 11th century bridge. From here, if you are in good shape you can take the hike to Havuts Tar, which is a very rewarding trip which very few people know about, and even fewer reach.
Below is the Rediscovering Armenia Guidebook information about Garni Gorge.
