Tbilisi is a city of stunning views and using the network of walking paths on the slopes surrounding city is a great way to soak them in. One leads from the amusement park at the summit of Mtatsminda all the way around to Narikala Fortress, which should take you around 45 minutes. Allow longer if you are walking in the opposite direction, as it is more up hill this way round. Another path from Mtatsminda leads down to the Pantheon. The paths are generally in very good condition; although some of the wooden boardwalks across streams have rotten planks that need replacing, so do take care. Both paths provide great views. You can save a little energy by taking the funicular up Mtatsminda and then the cable car down from Narikala.