//
Photo: No machine-readable author provided. Klemens~commonswiki assumed (based on copyright claims)., CC BY-SA 2.5 via Wikimedia Commons
This guide does not list individual places yet.
© OpenStreetMap contributors
Groty
Babice
Transatlantycka Centrala Radiotelegraficzna
or rather ruins thereof. The twin object in Grimeton, Sweden is still preserved.
Parysów
Aeroklub Warszawski
Parachuting, gliding, ballooning, etc.
that constituted the Warsaw Fortress in the 19th century. Four of them were preserved: