The Little Bighorn Battlefield on the Crow Reservation in eastern Montana. Unique in how the markers placed where the 7th Cavalry fell, you can see how the battle developed. Well staffed with Park Service historians who hold some very interesting talks.
I highly recommend it in late June, as you can see what the battlefield looked like on that day, and Montana is beautiful in June.
All national institutions of churches, whether Jewish, Christian, or Turkish, appear to me no other than human inventions set up to terrify and enslave mankind, and monopolize power and profit. - Thomas Paine