a model of the proposed tower and cascade were tested under worst case scenario conditions of wind and weather , and although under extreme conditions there was the likelihood of pedestrians along both otan kangan street and chongbaek esplanade receiving an unexpected soaking , and in particularly high winds even the wealthy theatre-goers at the pyongyang grand theatre were not safe from a deluge , it was decided that this was a small price to pay for the opportunity of adding such a unique and characterful feature to the top of an already one-of-a-kind building .