Bogazkale is off the Ankara - Samsun road from the town of Sungurlu and there are plenty of buses that run on that route. Dolmuses and Buses run between Sungurlu and Bogazkale but the service can be iffy. Taxis are available between Sungurlu and Bogazkale.
Hattusas, the ruins of a Hittite city dating from about 2000 B.C. to 1000 B.C. At one time it must have been a great and impressive city but today little remains except for the reconstructed foundations. However, the plan of the city is still evident and walking around the ruins makes an interesting and instructive day.
Bogazkale Museum A few objects from the Hattusas (most are in Ankara) and lots of photographs of the excavations.
Yazilkaya An excavation site containing Hittite buildings. The foundations of large religious buildings from that period are still visible.
Hattusas pension, ☎ +90 364 452 2013. About the only hotel in Bogazkale, the hotel has a few rooms with shared bathroom and a restaurant on the ground floor. Run by Mustafa and Ahmet Baykal, the friendly owners, who are only to happy to chat and give advice. US$7-US$15. edit