Cirrha or Kirra () was a town in ancient Phocis on the coast, which served as the harbour of Delphi. Pausanias erroneously supposes that Cirrha was a later name of the Homeric Crissa. They were two separate towns, with interlinked histories. Crissa was more ancient than Cirrha, and was situated inland a little southwest of Delphi, at the southern end of a projecting spur of Mount Parnassus. Crissa gave name to the Crissaean Gulf, and its ruins may still be seen at a short distance from the modern village of Chrisso. Cirrha was built subsequently at the head of the gulf, and rose into a town from being the port of Crissa. This is in accordance with what we find in the history of other Grecian states. The original town is built upon a height at some distance from the sea, to secure it against hostile attacks, especially by sea; but in course of time, when property has become more secure, and the town itself has grown in power, a second place springs up on that part of the coast which had served previously as the port of the inland town. This was undoubtedly the origin of Cirrha, which was situated at the mouth of the river Pleistus, and at the foot of Mount Cirphis. In course of time the sea-port town of Cirrha increased at the expense of Crissa; and the sanctuary of Pytho grew into the town of Delphi, which claimed to be independent of Crissa. Thus Crissa declined, as Cirrha and Delphi rose in importance. The power of Cirrha excited the jealousy of the Delphians, more especially as the inhabitants of the former city commanded the approach to the temple by sea. Moreover, the Cirrhaeans levied exorbitant tolls upon the pilgrims who landed at the town upon their way to Delphi, and were said to have maltreated Phocian women on their return from the temple. In consequence of these outrages, the Amphictyons declared war, the First Sacred War, against the Cirrhaeans about 595 BCE, and at the end of ten years besieged (see Siege of Cirrha) and succeeded in taking the city, which was razed to the ground, and the plain in its neighbourhood dedicated to Apollo, and curses imprecated upon any one who should till or dwell in it. Cirrha is said to have been taken by a stratagem which is ascribed by some to Solon.