What do you feel is the most must-see place in the united states?

Bar Harbor Maine - Frenchman's Bay - it is amazing!

Sedona Arizona - especially the Chapel of the Holy Cross, nature as a majestic church for God San Francisco - take a Bay Cruise for the best view Crater Lake, Oregon - awe-inspiring beauty Lake Tahoe's Emerald Bay - tranquility and beauty California coast from Monterey to Big Sur - the meeting of earth, water, sky and cloud, always changing

I think the US has a lot of natural wonders to offer. Sure, there's history here and that's really interesting, but it seems to me that if you're from Europe then there's plenty of history there! I'd say Niagra Falls, or white water rafting in WVa, Arizona landscape. I guess I couldn't pick just one must see, sorry :(!

I think the most must-see place in the united states is Sedona Arizona, because someone very special to me lives there.