The longwave radio mast Hellissandur is a 412 metre high guyed radio mast for longwave transmissions at Gufuskalar in the vicinity of Hellissandur on the Snfellsnes peninsula of Iceland. This mast which is the tallest structure in Western Europe is insulated against ground and guyed in five levels by steel ropes which are subdivided by insulators. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
The answer to this question is:
Building