This year is the 30th anniversary of Warsaw's Old Town inclusion to the World Heritage List among 700 other sites.
Warsaw's Old Town through the ages was repeatedly destroyed by fires and damaged during war. However, the real disaster was brought by the World War II and the year 1944. Warsaw Uprising and intentional destroying the Old Town by the invader caused losses reaching 90 %. After the war inhabitants of Warsaw undertook the restoration of the unique and historic buildings of the Old Town.
A five-year comprehensive reconstruction campaign is an outstanding example of a near-total reconstruction of a span of history covering the 13th to the 20th century.
This extreme effort was appreciated in 1980, when the Old Town was included to the UNESCO World Heritage List. To celebrate this event an International Conservator's Conference – 'Colours of historic elevations from Middle Ages to present times. History and art conservation' was held in Warsaw from 22nd to 24th of September.