Centrally located in Anatolia, Ankara is the capital of Turkey and the country's second largest city after Istanbul. It is an important commercial and cultural city. Ankara boasts a number of prestigious universities and technical colleges, as well as the largest library in the country. It is also a center for opera, ballet, jazz, and modern dance, and is home of the Presidential Symphony Orchestra, the State Theatre, and the State Opera and Ballet. The most interesting part of the city is Ulus, the old part of town. The main sight is the Kale, the fortress overlooking the city. Around town you will find a few remains of Roman times, like the Augustus temple, which became famous with historians because of the 'Monumentum Ancyranum', the legacy of emperor Augustus. Next to the temple ruin you will find the tomb of Haci Bayram and his mosque.