Aeroklub Warszawski
West, Poland
Parachuting, gliding, ballooning, etc.
© OpenStreetMap contributors
Parysów
Babice
Transatlantycka Centrala Radiotelegraficzna
or rather ruins thereof. The twin object in Grimeton, Sweden is still preserved.
Groty
that constituted the Warsaw Fortress in the 19th century. Four of them were preserved:
