Day trips can get you anywhere quite easily. There are plentiful cheap, guided day tours offered by tour agencies all over Yerevan to place like Khor Virap, Garni/Geghard and Echmiadzin/Zvartnots. You can also hire taxis for 100dram/kilometer 30 US cents and about 1,500/hr $5 for waiting time if you want to do things at your own pace. Car rentals are more expensive, but useful if you want to strike out on your own into Khosrov Reserve or just explore the Hrazdan Gorge at your own pace.
