Askeran fortress (, Mayraberd; ) is located in the town of Askeran in the de facto independent Nagorno-Karabakh Republic (recognized as a part of Azerbaijan). It is located on the banks of the Qarqar River and was built by the Karabakh khanate ruler Panah Ali Khan and consists of two sections. The left-bank section features a double line of stone walls. During the Russo-Persian War of 1804–1813 the Russian encampment was located near the fortress. In 1810 the peace talks between the Russians and Persians were conducted at the fortress.