Poland (Polish: Polska), is a country in Central Europe. It has a long Baltic Sea coastline and is bordered by Belarus, the Czech Republic, Germany,Lithuania, Russia (Kaliningrad Oblast), Slovakia, and Ukraine. The first cities in today's Poland,Kalisz and Elbląg on the Amber Trail to the Baltic Sea, were mentioned by Roman writers in the first century AD, but the first Polish settlement in Biskupin dates even further back to the 7th century BC.