Poland has had a complicated existence. It was too often invaded, divided and conquered. The frontiers were unstable and peace was rare. Poland saw tyrannies, insurgencies and the 20th century at its worst: dictatorship, extermination camps, complete destruction of the main cities, an unparalleled shift of the borders and a failed attempt at socialism. The complex historical patchwork and the indomitable national spirit make it one of the most intriguing countries to visit.