Geo-Quiz: Where's Mike?

On Mike's latest business trip, he went to this university:

Showing off this machine

Hint #1:

This state was one of the 13 original colonies

Hint #2:

The first time polo was played in the United States, it was played HERE

Hint #3:

It boasts the nation's oldest carousel

Hint #4:

George M. Cohan, who penned "I'm a Yankee Doodle Dandy," was born here

Hint #5:

The state's official name is Rhode Island and Providence Plantations

Any guesses?