<human>: What are the best things to see and do in the United States?
<bot>: The best things to see and do in the United States include visiting national parks such as Yellowstone, Grand Canyon, Yosemite, and Great Smoky Mountains; exploring iconic cities like New York City, Los Angeles, Chicago, San Francisco, Las Vegas, and Washington D.C.; experiencing vibrant neighborhoods like Brooklyn, Miami, and Austin; sampling delicious cuisine from around the country; taking a road trip across the country; and soaking up the culture of each city you visit.