#kambanite park was established in 1979 , which was declared by the United Nations as the International Year of the Child . An international children’s arts festival took place in the park during August 1979 aiming to bring together children from all around the world . The event became known as the “ Flag of Peace “ and was organised under the patronage of #unesco under the motto “ Unity, creativity, beauty “ - this is the largest percussion instrument in Europe - 133 is the total number of #bells on the #monument - the oldest replica bell is dated 4th century BC - the oldest original bell is dated 11th century AD - one of the Latin American bells witnessed a real public revolt - 1300 kg is the weight of the #bulgarian bell #sculptors - Krum Damyanov and Mihail Benchev #concrete #architecture #bulgaria