Tschernjachowsk

Chernyakhovsk Черняховск (Russian)
- Town -
In Chernyakhovsk
Location of Kaliningrad Oblast in Russia
Chernyakhovsk Location of Chernyakhovsk in Kaliningrad Oblast
Coordinates: 54°38′05″N 21°48′43″E / 54.63472°N 21.81194°E / 54.63472; 21.81194Coordinates: 54°38′05″N 21°48′43″E / 54.63472°N 21.81194°E / 54.63472; 21.81194

Coat of arms	Flag
Administrative status (as of November 2011)
Country	Russia
Federal subject	Kaliningrad Oblast
Administrative district	Chernyakhovsky District
Town of district significance	Chernyakhovsk
Administrative center of	Chernyakhovsky District, town of district significance of Chernyakhovsk
Municipal status (as of July 2009)
Municipal district	Chernyakhovsky Municipal District
Urban settlement	Chernyakhovskoye Urban Settlement
Administrative center of	Chernyakhovsky Municipal District, Chernyakhovskoye Urban Settlement
Statistics
Population (2010 Census)	40,449 inhabitants
Time zone	USZ1 (UTC+02:00)
Founded	1336
Town status since	October 10, 1583
Previous names	Insterburg (until 1946)
Postal code(s)	238150–238154, 238158, 238165, 238169, 238170, 238816
Dialing code(s)	+7 40141
Website	inster39.ru
on

Chernyakhovsk (Russian: Черняхо́вск); prior to 1946 known by its German name Insterburg (Lithuanian: Įsrutis; Polish: Wystruć) is a town and the administrative center of Chernyakhovsky District in Kaliningrad Oblast, Russia, located at the confluence of the Instruch and Angrapa Rivers, forming the Pregolya. Population: 40,449 (2010 Census).

Chernyakhovsk was founded in 1336 by the Teutonic Knights on the site of a former Old Prussian fortification when Dietrich von Altenburg, the Grand Master of the Teutonic Knights, built a castle called Insterburg following the Prussian Crusade. During the Teutonic Knights' Northern Crusades campaign against the Grand Duchy of Lithuania, the town was devastated in 1376 and then again by Polish troops in 1457. The castle had been rebuilt as the seat of a Procurator and a settlement also named Insterburg grew up to serve it.