Question: Which white and orange colored communications and observation tower opened on March 13, 2015?
Sentence (from "Idarkopf Tower"): Idarkopf Tower (German: Idarkopf Turm or Idarkopfturm ), also known as Idarkopf Observation Tower (German: Idarkopf Aussichtsturm ) for long, is a wooden German lattice observation tower on the summit of Mt. Idarkopf in the state of Rhineland-Palatinate.
Relevant evidence: No