Vardø (vaɖːø; Vuorea; Várggát) is a town and the administrative centre of Vardø Municipality in Troms og Finnmark county, Norway. The town is located on the island of Vardøya in the Barents Sea, just off the coast of the large Varanger Peninsula. The town has a population (2017) of 1,875 which gives the town a population density of . Vardø is the easternmost town in Norway (and in all the Nordic countries), located at 31°E, which is east of Saint Petersburg, Kyiv, and Istanbul. The eastern part of Finnmark is in the same time zone as the rest of the country, but it is more than an hour at odds with daylight hours. The largest industry in the town is fishing and fish processing. There is a good port in Vardø, and another port in nearby Svartnes, on the mainland. The town is connected to the mainland by the undersea Vardø Tunnel which is part of European route E75. Vardø Airport, Svartnes is located at the other end of the tunnel on the mainland. The village of Vardø, on the island of Vardøya, was made important because of the Vardøhus Fortress that was built on the island in the early 14th century. The village grew up around the fortress and became a major trading post between the Norwegians in Finnmark county and the nearby Russians. In the 17th century, Vardø was a centre of several high-profile witch trials, most notably the 1621 witch trial and 1662 witch trials. Pomor trade was very important in the 18th century, and Vardø was often called the Pomor capital. Because of this, in 1789 the King of Norway granted Vardø town status as a kjøpstad. On 1 January 1838, the town and the surrounding rural district were established as the new municipality of Vardø by og landdistrikt, meaning "Vardø town and rural district" (see Formannskapsdistrikt). This arrangement did not entirely satisfy the new formannskapsdistrikt law, so in 1839, the town was separated from the rural district to form its own town-municipality.