Gudauri is known as a ski resort. When you pass it on the Georgian Military Road, be sure to stop at the observation deck. You cannot miss it, as the site looks quite unusual. It's interesting that the deck was built in 1983 to honor the friendship between Georgia and Russia. Mosaic on the walls shows significant events in the country's history.
Unfortunately, there was fog during our visit, but even in such weather the scenery was beautiful :)
Getting there: The observation deck is located near Gudauri on the Georgian Military Road. You can go here by minibus from the Didube bus station in Tbilisi. Usually the site is visited during the tour to Kazbegi.