Boston to Vegas - Middle of March!

[MRoper18]

Hello everyone!

So this spring break my friends and I are planning a road trip to Vegas from our school in Boston. We will be leaving on a Thursday night, and returning the following Sunday, for a total trip time of 10 days. We would like to get to Vegas on the Monday or Sunday following the Thursday night that we leave. We will be checking out of the hotel in Vegas on a Friday morning and heading back. A quick review of Google Maps shows that we will be traveling through:

Mass
New York
Pennsylvania (briefly)
Ohio
Indiana
Illinois
Iowa
Nebraska
Colorado
Utah
Las Vegas

So far we definitely want to see Niagara falls. On the way there we have a lot of time and plan on getting a hotel for 2 nights. We want to stop in Chicago one of the nights. We are looking for other cool stuff to do, like Yellowstone or the Grand Canyon. We plan on hitting the Grand Canyon on the way back, but we really want to see some cool stuff on the way there.

Since we are all graduating at the end of the year and none of us have ever road tripped or seen the USA before we really want to see all of the big things that we can, IE Mount Rushmore, Grand Canyon, Niagara Falls, etc...

I was hoping someone could give a list of some cool things to see on the way that aren't too far out of the way.


Some additional info:

There will be four of us.
None of us have really seen anything outside the North East.
We are really interested in touristy spots.

Thanks in advance!!

Mike