Rambynas is a hill on the right bank of the Neman River in Rambynas Regional Park, Pagėgiai Municipality, western Lithuania. The current hill, about 46 metres (151 ft) above sea level and about 40 metres (130 ft) above the Neman, is a remnant of the larger hill that was destroyed by erosion. The hill was known as sacred among locals and played a role in the ceremonies of pagan Lithuanians. It is featured in many local legends and is protected by the state as a mythological object. A large stone at the top of the hill, known as the altar stone, was destroyed by a miller in 1811. Rambynas became popular with Prussian Lithuanians at the end of the 19th century who organized various events, most notably celebrations of the Saint Jonas' Festivals or Rasos (summer solstice), on the hill. They rebuilt the altar in 1928. The hill is popular with Lithuanian neo-pagans and hosts the annual celebrations of the summer solstice on 23 June.