The airports and train/bus stations in the U.S., Canada, and Mexico are pretty boring in general. Some might have nice architecture, but your experience as a passenger is not very remarkable. When we come across something that shatters this statement, I will mention it here.
We are still waiting for the world where truly free wifi is available at all airports. If you need a verification via mobile phone, then it becomes useless for people without a proper device. We encounter this problem in many of the airports in the U.S.
Small Wide World 