You stand atop the Sears Tower, the tallest building in North America, and enjoy the fantastic views of downtown and Lake Michigan, before taking the long elevator ride back down, and taking the "L" to Wrigley Field for a Cubs game. Where in the U.S. are you?

As you sip your third latte of the day, you think about today's visit to the Boeing Co. plant, Pike Place Market and the Experience Music Project. Tomorrow you will do a guided hike on Mount Rainier, just a two hour drive southeast of this city. Where in the U.S. are you?

You feel enlightened after today's visit to the National Cowboy & Western Heritage Museum, and you look forward to spending the weekend at the Wichita Mountains Wildlife Refuge, most noted for its impressive animal life. You may even see the wind come sweeping down the plain. Where in the U.S. are you?

You are one of the four million annual visitors at the magnificent Grand Canyon National Park, an exceptionally deep, steep-walled canyon excavated by the Colorado River. You will also be visiting the Painted Desert, the Sonoran Desert and the San Francisco Plateau, with its ancient lava flows -- good thing you brought your sunblock. Where in the U.S. are you?

You are in one of the oldest planned cities in the U.S., famous for its gardens and squares, as well as its extensive downtown historical district. You spend the day at the Telfair Academy of Arts and Sciences, the oldest public art museum in the South. Where in the U.S. are you?

Strolling through the colorful and historic Gaslamp Quarter, you buy some souvenirs before returning to your car, taking a leisurely drive through Balboa Park, then heading for Mission Beach, where you show off your in-line skating skills on the famed boardwalk. Where in the U.S. are you?

You are on a riverboat excursion on the Mississippi River, having set off from one of the river's most important ports. It is pleasant to take it easy now, for you have spent several days visiting some of the city's many sights, including the National Civil Rights Museum; Graceland, the former home of Elvis Presley; and Beale Street, a festive music and entertainment district. Where in the U.S. are you?

After winding through Faneuil Hall and Quincy Market this morning, you take the "T" subway to Cambridge, to visit your cousin at Harvard University. Where in the U.S. are you?

You are backpacking in Denali National Park and Preserve, hoping to catch a glimpse of the timber wolves, moose and grizzly bears that roam freely here. Mount McKinley, the highest peak in North America, looms majestically from above. Where in the U.S. are you?

You've got a busy Hawaiian vacation planned. The Iolani Palace in Honolulu, the Polynesian Cultural Center in Laie, surfing in Waikiki Beach, plus Pearl Harbor and Diamond Head -- so many amazing places, all on one island. Where in the U.S. are you?