The term coolest means something different to everybody. So it would be a subjective term.  Insider.com recently published a list of the coolest building in every state.

Even before I read this entire article, I already know the coolest building in North Dakota. And you're reading this, you could have very well had the same thought as I. And you're line of thinking is like mine, Inside.com also saw the same building.

For North Dakota, The Heritage Center building is the coolest building in the state. And why not? It's a new building and is the coolest ever. The glass cubed shaped entrance with copper wings. The Heritage Center looks cool in the day or night.

You can see the entire list here.