The Alley of cosmonauts is located near the Pantheon in the Sea Garden. The tradition for planting coniferous trees by Russian cosmonauts, who came to Varna, is unique. The first tree was planted by Yuri Gagarin on 26 May 1961 who started the tradition. Among the names you can read and those of Bulgarian cosmonauts Georgi Ivanov and Alexander Alexandrov. In the alley you will see the names of G.S.Titov, Valentina Tereshkova, Aleksey Leonov, etc.