Yerevan is the capital of Armenia. It is a very old city, but it has been scarred quite a bit by history. You will still find it the best place to start exploring Armenia, and there are many museums and parks in town.
Compared with the rest of the country, cultural life is great here. Ther is wider choice of restaurants, hotels and bars and there are still quite a few good orchestras playing in Yerevan.
The most important sight in town is probably the Erebuni Fortress, which dates from the 8th century BC. It is from the same period as the fortress in Van in East Turkey.