This US travel trivia quiz has 70 free questions with answers for anyone who loves seeing America: road-trippers, frequent flyers, national park collectors and people planning their first big trip. It covers how the country is actually travelled: the world's busiest airport, the longest Amtrak route, the longest Interstate and the longest road, where Route 66 really ended, which theme park draws the most people on Earth, and why the Las Vegas Strip is not technically in Las Vegas. The easy questions ask which island Waikiki is on and who gave America the Statue of Liberty. The harder ones get into the details travellers argue about at rest stops: what ORD stands for, which tribe owns the Grand Canyon Skywalk, how many time zones the US really has, which state capital you cannot drive to, and the one Smithsonian museum that charges admission. Along the way you will pass Wall Drug, Cadillac Ranch, the Corn Palace and the world's largest ball of twine. Every answer has been checked against a reference page and each question shows its source once you answer, so it works for a road-trip car game, a travel-club quiz night or settling a bet about the deepest lake in the country.
30 of 70 questions with answers and explanations. Play the quiz
Q 01Which US airport has been the world's busiest by passengers every year since 1998, except 2020?
Atlanta Hartsfield-Jackson
It is Delta's main hub, with around 1,000 flights a day to 225 destinations, and is considered America's first mega-hub.
Q 02Which is the most visited national park in the United States, with over 11 million visitors in 2025?
Great Smoky Mountains
Straddling Tennessee and North Carolina, it charges no entrance fee, and Dollywood sits just outside its gates.
Q 03Which 1872 park was the first US national park and widely considered the first in the world?
Yellowstone
It sits mainly in the northwest corner of Wyoming, with slivers in Montana and Idaho, and is home to the Old Faithful geyser.
Q 04Amtrak's Texas Eagle joins which train at San Antonio to form America's longest passenger rail route?
Sunset Limited
The combined run is 2,728 miles and second-longest in the Americas, behind only Canada's The Canadian.
Q 05In what year was Amtrak founded to take over most US intercity passenger rail?
1971
It is a quasi-public corporation that takes state and federal subsidies but is run as a for-profit business.
Q 06Interstate 90, the longest Interstate at just under 3,100 miles, runs from Boston to which West Coast city?
Seattle
Its final stretch at the western end opened in 1993, and the eastern extension in Boston was finished in 2003 as part of the Big Dig.
Q 07Historic Route 66 ran 2,448 miles from Chicago to which California city?
Santa Monica
Established in 1926, it crossed eight states on the way and was also nicknamed the Main Street of America.
Q 08In which year was Route 66 officially removed from the US Highway System?
1985
Its 'Mother Road' nickname was popularised by John Steinbeck's The Grapes of Wrath.
Q 09Which Florida park was the most visited theme park in the world in 2024, for the eighteenth year running?
Magic Kingdom
It drew 17.83 million visitors that year and has been North America's most visited park for at least 24 years.
Q 10Most of the Las Vegas Strip lies in which unincorporated town, not the city itself?
Paradise
The roughly 4.2-mile stretch lies just south of the city limits, in Paradise and Winchester.
Q 11Which Michigan island resort bans nearly all motor vehicles?
Mackinac
Exceptions are made only for emergency and city service vehicles, and snowmobiles in winter; the Victorian Grand Hotel is its landmark.
Q 12Which 469-mile scenic road has been the most visited National Park System unit almost every year since 1946?
Blue Ridge Parkway
It is the longest linear park in the US and links Shenandoah National Park with the Smokies.
Q 13Key West, the southernmost city in the contiguous US, lies roughly 95 miles north of which country?
Cuba
It is about 130 miles southwest of Miami and is the westernmost Florida Key reachable by highway.
Q 21Which 52-foot freestanding natural span near Moab, Utah, appears on the state's license plates?
Delicate Arch
It is the most recognised landmark in Arches National Park and also featured on a stamp for Utah's centennial of statehood in 1996.
Q 22At 1,949 feet deep, what is the deepest body of water in the United States, found in southern Oregon?
Crater Lake
It partly fills a caldera left when Mount Mazama collapsed about 7,700 years ago, and it appears on the Oregon state quarter.
Q 23What 1913 Death Valley air temperature still stands as the highest ever measured on Earth?
134 °F
The World Meteorological Organization lists Death Valley as the site of the hottest surface temperature recorded on the planet.
Q 14The Mall of America, the largest mall in the US, is in which Minnesota city?
Bloomington
It opened in August 1992 on the old site of Metropolitan Stadium, where the Twins and Vikings once played.
Q 15Which Finnish-American architect designed the 630-foot Gateway Arch in St. Louis?
Eero Saarinen
He designed it in 1947, though construction did not finish until 1965; it is still the world's tallest arch.
Q 16Wall Drug in South Dakota built its 1930s fame by advertising what to travellers?
Free ice water
Owner Ted Hustead's wife Dorothy had the idea; today billboards for the store stretch for hundreds of miles and it draws around two million visitors a year.
Q 17Cadillac Ranch, ten Cadillacs buried nose-first, is near which Texas city?
Amarillo
The Ant Farm art group installed it in 1974, and the cars are said to lean at the same angle as the pyramids of Giza.
Q 18US Route 20, America's longest road, runs from Boston to which Oregon coastal town?
Newport
Its western end meets US 101 within a mile of the Pacific; in the east it roughly parallels Interstate 90.
Q 19Chicago O'Hare's airport code is ORD. What does it stand for?
Orchard Field
The airfield was renamed Orchard Field in the mid-1940s and given the code before it was renamed again in 1949 for aviator Edward 'Butch' O'Hare.
Q 20The Space Needle was built for a World's Fair held in which year?
1962
At 605 feet it was once the tallest building west of the Mississippi, and the fair drew more than 2.3 million visitors.
Q 24Which Florida city, founded by Spain in 1565, is the oldest continuously inhabited European settlement in the lower 48?
St. Augustine
Admiral Pedro Menéndez de Avilés, Florida's first governor, founded it on September 8 that year.
Q 25Mammoth Cave, the longest known cave system in the world with over 426 miles surveyed, is in which state?
Kentucky
It is more than 1.5 times longer than the runner-up, an underwater cave system in Mexico.
Q 26Going-to-the-Sun Road is the only road across which Montana national park?
Glacier
The roughly 50-mile road tops out at 6,646 feet and spans the park from its west to its east entrance.
Q 27Which US port was the busiest cruise passenger port in the world in 2024?
PortMiami
More than 7.2 million cruise passengers passed through in 2023, and it was the original homeport of Icon of the Seas, launched in 2024 as the largest cruise ship ever built.
Q 28How many historic sites does Boston's 2.5-mile Freedom Trail pass?
16
A red line leads from Boston Common to the Old North Church and Bunker Hill Monument; most stops are free.
Q 29The glass Grand Canyon Skywalk at Grand Canyon West is owned by which Native American tribe?
Hualapai
The horseshoe-shaped cantilever opened to the public in March 2007.
Q 30Which state capital has no roads to the rest of its state, so visitors come by air or ferry?
Juneau
The city sits beneath the vast Juneau Icefield, and its rugged terrain is why no highway was ever built.