Esrange
At Esrange, Sweden in 1972, a 30 metre high Skylark tower was built. The tower consists of a pyramid-like building with a launch tower on its top, in order to protect the rocket from cold before launch, necessary as Esrange is within the Arctic Circle. At launch, exhaust doors were opened to enable the smoke to leave the construct.
As Skylark rockets are no longer available, Esrange Skylark launch tower was modified in 2005 for launching Brazilian VSB-30 rockets. The tower is now used for launches of rockets manufactured at Brazil.
Read more about this topic: Skylark Launch Tower