The World Through the Eyes of the Youth

The three stamps along the top of this cover from Gdańsk, Poland are 2018 stamps from a series titled "The World Through the Eyes of the Youth". Stamps from left to right: "needed changes", "saving our planet" and "the battle with smog". On that last stamp, dragons are used to represent smog which is fitting, as the Polish word for dragon is "smok". Very similar to the Polish word for smog... which is also "smog". Thank You Roman for pointing that out to me.

At the bottom is a 2018 stamp commemorating the planned transnational highway between Klaipėda, Lithuania and Thessaloniki, Greece, crossing seven countries between the Baltic and Mediterranean. It is scheduled to open in 2025.