Bojnice Cas­tle is one of the old­est and most impor­tant mon­u­ments in Slo­va­kia. It stands on a traver­tine mound above the city. The first writ­ten record of the cas­tle dates back to 1113 – the deed of the Zobor Abbey. Bojnice Cas­tle was orig­i­nal­ly a wood­en cas­tle, an upgrade of the for­mer hill­fort. Over the course of the 13th cen­tu­ry, the cas­tle was rebuilt in stone by the Poz­nań fam­i­ly.