paperback, look at my list above your post.
I have a few matches here with the Empire State Building, the WTC, Boston, Atlanta, and Disney World.
My additions for other possible hits:
The top of Mt. Washington, NH
Mt. Desert Island, ME
Niagra Falls (NY and Ontario)
Key West
Myrtle Beach
No to Key West and the TOP of Mt. Washington, but I have been near the mountain by way of US 2. Yes, to Mt. Desert Island, Niagara Falls, and Myrtle Beach.
Yes on Niagara Falls. No on WTC, BTW. Yes on DFW airport.
Of places mentioned so far, I’ve been to the Empire State Building, DC mall, Disney World (Orlando), and Indianapolis airport. I haven’t actually been to Independence Hall, but I’ve ridden past it when in Philadelphia.
Other places I suspect I have in common with a lot of Dopers:
Yellowstone National Park, Niagara Falls, Mount Rushmore, Colonial Williamsburg.
Airports in Cleveland (Ohio), Philadelphia, Montreal.
Greyhound Bus stations/terminals in Cleveland, Indianapolis, Richmond (Virginia), Washington (DC), Pittsburgh, Cincinnati, and Breezewood (Pennsylvania).
Amtrak facilities along the Eastern USA corridor as far south as Newport News (Virginia).
I can match all those but Myrtle Beach. How about:
Grand Canyon
Yellowstone
Grand Tetons
or
The Corn Palace
Wall Drug
I match Key West, too.
um, I was responding to Uvula Donor
I’ve had another thought on the zooming in process. What if we find which of the USA Interstate highways all of us have been on?
The easy ones for me are I-65, I-40, I-24. Then I can add I-10, I-20, I-75, I-85, I-95, I-66, I-81, I-71, I-84, I-90, I-16, I-26, and maybe some others.
Some palces I have been, that I expect many Dopers have also been.
In the Louvre, by the Mona Lisa
Denver, CO Intl Airport, on the little train thingies.
Trafalga Square, by the Lions.
San Frencisco, on the Golden Gate Bridge.
St Louis, in the arch monument.
New York, on the Statue of Liberty viewing ferry.
San Francisco, in Alcatraz.
Disney Land, Epcot Center, Paris street scene.
The state-side observation platform at the Niagra Falls.
Obviously Niagara Falls was added while I was composing my first post to this thread. I’ve also been to Key West, the Grand Tetons, the World’s Only Corn Palace, and Wall Drug. My parents passed up the roadside invitations to see Rock City and Ruby Falls, though…
Earth.
I can’t be the only doper who has been to the smithsonian can I?
OK, gonna go through the thead and pick out all the matches for me…
Earth
San Francisco, on the Golden Gate Bridge
Disney Land
Grand Canyon
Yellowstone
Grand Tetons
Atlanta Airport
DFW airport
Burbon Street in NO, LA
Astrodome
WTC observation deck
The Empire State Building
Grand Central Station
Grand Ole Opry (Nashville)
Great Smoky Mountains National Park
Denver, CO
Peachtree Street in Atlanta
Great Smoky Mountains National Park
I’ll restate a couple of my specifics (just to narrow down location in some big cities):
Johnson Space Center, Clear Lake City, TX
The Strand, Galveston, TX
Stanley Hotel, Estes Park, CO
Macy*s, Houston Galleria, Housewares, looking at the copper pots
BART terminal under the Embarcadero, San Fransisco, CA
Memorial Stadium (where the Sooners play), OKC, OK
16th Street Mall, Denver, CO
And add a couple of more specifics from the West Coast:
Sea World, San Diego, CA
The Rosebowl
Coit Tower, San Fransisco, CA
China Cove, near Carmel by the Sea, CA
That little gas station / general store with the wood siding in Sausilito, CA that sells soft pretzels
I think the spirit of the OP is for some specific locations, not just saying a city or highway.
Exactly: In the spirit of the OP, we have to either go with specific locations, OR, go along with UncleBeer, since really the only “place” we have ALL been to is the same place we are ALL at right now.
Oh, and Sock Munkey, I had made the assumption earlier that by listing the Mall in DC that the Smithsonian kinda came along for the ride. But maybe that’s just me. 
The Womb.
Outside
In the Water.
That is all.
From the lists above, I’ve been on the DC mall, at Baltimore’s Inner Harbor, Independence Hall, the Smithsonian, Atlanta Airport, Peachtree St (Atlanta), and at all of the DC area airports (BWI/Dulles/National).
the toilet, bathroom, restroom… hardy har!
I’ve been to Mexico, Cali, Az, Texas, Denver Colorado, London- Abbey Road, Paris, Amsterdam, Minnesota, Hawaii (born but not local), the Four Corners… not a huge list.
Fpr me…
Niagara Falls (the Canadian side)
The top of the Empire State Building
The CN Tower
Heathrow Airport (terminal 4 only)
Schiphol Airport
Dorval Airport (briefly)
Pearson Airport
SFO
The base of the Eiffel Tower
The Golden Gate Bridge
Coit Tower
The Mall in Washington DC
Trafalgar Square
La Défense
The Little Mermaid statue (Copenhagen)
Ones I have in common:
Hartsfield and Pittsburgh airports
Disney World
South of the Border- if you’ve driven I-95 long enough you’ve been there
The Mall in DC
Niagara Falls and Goat Island
Vegas! Luxor, MGM Grand, Excalibur, New York…, Paris, Bellagio, the Mirage, the Sands, the Hilton
Flight 93 crash spot in Shanksville, PA
There’s more, but I don’t think everyone has been there