I have been up the
Space Needle in Seattle. I was there just before dusk, and stayed long enough for it to get dark.
Unfortunately, I have not been up the CN Tower in Toronto. Before going to Canada I asked everyone, travel agents included, about where the CN Tower was in relation to the Via Railway Station. I still find it so difficult to believe that no one knew that it is right next door to the Station. I thought it was CN as in "CN News". I did not realise (sorry MDB) that it is Canadian Network (railway) tower.
By the time I realised this, there was only a hour before I was due to board the train, and I was encumbered with luggage, so unable to go up the Tower.
Luckily one of the few passengers travelling in the sleeping car section of the train, was the Chief Engineer (Winnipeg) of Via Rail. During the two days it took to reach Winnipeg, he was able to explain in great detail about the signalling, satellite tracking, power units, and much more besides. This more than made up for missing the CN Tower. He was travelling by train, rather than flying, as a Customer Relations exercise. I have to say it was an excellent customer relation exercise.
One day, I might return to Canada, by flying to Halifax, (Nova Scotia, not Yorkshire) and then travelling by train to Toronto.