12/01/2026
Jan Heweliusz and His Cosmos — a journey between the stars and Gdańsk
Every year on January 28, the birthday of the legendary 17th-century Gdańsk astronomer — Jan Heweliusz, I host a special themed tour. This is not a dry lecture, but a vivid story of a man who observed the sky from the rooftops of old Gdańsk .
During the walk, you will discover:
🌙 how the son of a brewer in the 17th century became one of the most renowned astronomers in Europe
🔭 why his observatory was located directly on city buildings
📖 what 17th-century star atlases looked like — and why they were used for centuries
❤️ the important role his wife played in his scientific work
🔥 how a single fire nearly destroyed the results of his life’s work
This is a story about 17th-century science, ambition, family, loss, and an extraordinary passion for the cosmos — all set against the backdrop of Gdańsk, a city that once looked to the stars .
👉 Want to join a group tour? Send me a private message.
👉 Or I’ll be happy to arrange a private tour at any time that suits you.
Gdańsk has its own universe — and I’ll show you where it begins.
