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Amazing Architecture - Grand Staircase in House of Scientists, Lviv (Lemberg), Ukraine <= before 1945 = Lwów, POLAND => see history, actual till today ! &

from MNN - Mother Nature Network

Tubular glass vacation home encases a full-grown tree

An eye-catching design but perhaps a fir tree isn't the best species to encase in a glass tube? Also, where's the fire pole?