The big difference to the Alps is the exposure in the sense of wilderness and freedom. The peaks there can be over 4000m high, but as a rule they are similar to our peaks in the Alps.
Colorado / North America in the middle of the Rockies has the best conditions for frozen waterfalls due to its geographical latitude and the influence of the Arctic.
THE ice climbing Mecca of Europe. A trip to the land of trolls, e.g. Ruijkan or Hemsedal can never be wrong.