Hypaepa (τὰ Ὕπαιπα) was a city in ancient Lydia, near the north bank of the Cayster River, and 42 miles from Ephesus.Its name was derived from its situation at the foot of Mount Aipos, itself a foothill of Mount Tmolus, Its location was identified by the Frenchmen Cousinéry and Texier and confirmed by the excavations carried out by Demostene Baltazzi on behalf of the Ottoman government in 1892.