Lappeenranta (; ) is a city and municipality in the region of South Karelia, about from the Russian border and from the town of Vyborg (Viipuri). It is situated on the shore of the Lake Saimaa in southeastern Finland, and is one of the most significant urban centers in the whole Saimaa region, along with the towns of Imatra, Mikkeli and Savonlinna. With approximately inhabitants () Lappeenranta is the largest city in Finland, after incorporating the previous municipalities of Lappee and Lauritsala in 1967, Nuijamaa in 1989, Joutseno in 2009, and Ylämaa in 2010. Lappeenranta, the region's centre for tourism, is the second most visited city by Russian tourists in Finland after Helsinki and it competes with Helsinki for the largest share of tax-free sales in Finland. Lappeenranta is a model for renewable energies and a clean living environment. Lappeenranta was the only Finnish city among the 14 finalists in the international Earth Hour City Challenge 2014, organized by WWF. In 2009, Lappeenranta was rated the fourth best in the comparison of the largest Finnish cities, while in the 2008 survey Lappeenranta was ranked fifth. In a survey conducted in 2011 for business representatives, Lappeenranta ranked 17th among Finnish cities in terms of image. Opened in 1918, Lappeenranta Airport, located in the center of the city, is the oldest airport still in operation in Finland. History Pollen analysis has shown that the modern-day municipality of Lappeenranta has been continuously inhabited for at least 2,000 years. Lappeenranta's original core settlement, Lapvesi, later Lappee, was originally formed around a headland jutting into Lake Saimaa, the site of the present fortress. The public market was established here, which became so important as a trading place that general Governor Count Per Brahe the Younger proposed that the Swedish government should grant town privileges to Lapvesi. The town was chartered in 1649 by Queen Christina of Sweden. At the time, Lapvesi was an important port for tar. Between 1721 and 1743, Lappeenranta was the capital of Kymmenegård and Nyslott County and during this period the Swedes built the fortress out in stages. In 1741, the Battle of Villmanstrand was fought between the Swedish and Russian armies in the Russo-Swedish War of 1741–1743. The battle ended in a Russian victory. The town was pillaged, wooden structures including the provincial chancellery were burnt and the ecclesiastical archives damaged. Lappeenranta, along with a portion of Old Finland, was