18 days in United States Itinerary

Writer Pearl Buck once called New York City “a place apart,” and this giant urban center remains unlike any other in the world.

Start off your visit on the 8th (Sun): admire the striking features of The Oculus and then walk around World Trade Center's Liberty Park.

For traveler tips, photos, maps, and other tourist information, go to the New York City online itinerary planner .

Cairo, Egypt to New York City is an approximately 14-hour flight. You can also do a combination of flight and bus. The time zone difference moving from Eastern European Time to Eastern Standard Time is minus 7 hours. Traveling from Cairo in December, you will find days in New York City are much colder (10°C), and nights are a bit cooler (2°C). Finish your sightseeing early on the 10th (Tue) to allow enough time to travel to Greenville.

The largest city in "upstate" South Carolina, Greenville has grown around the natural wonders of waterfalls located in the downtown area.

Eschew the tourist crowds and head to Falls Park on the Reedy and Dark Corner Distillery. Explore the numerous day-trip ideas around Greenville: Memorial Stadium (in Clemson), Sunset Rock and Ravenel Park (in Highlands) and Scaly Mountain Outdoor Center (in Scaly Mountain). The adventure continues: snap pictures at Liberty Bridge, pause for some photo ops at Joel Roberts Poinsett Statue, pause for some serene contemplation at NewSpring Church, and walk around Paris Mountain State Park.

For traveler tips, other places to visit, and more tourist information, read Greenville holiday planner.

You can do a combination of flight and taxi from New York City to Greenville in 4.5 hours. Other options are to do a combination of bus, flight, and taxi; or drive. Traveling from New York City in December, expect nights in Greenville to be about the same, around 5°C, while days are somewhat warmer, around 16°C. Wrap up your sightseeing on the 12th (Thu) early enough to drive to Grand Canyon National Park.

The size, shape, and color of Grand Canyon National Park combine to leave an impression on visitors as deep as the canyon itself.

Start off your visit on the 14th (Sat): get great views at Pima Point, get great views at Powell Point, then take some stellar pictures from Yaki Point, and finally take some stellar pictures from Lipan Point. Get ready for a full day of sightseeing on the 15th (Sun): tour the pleasant surroundings at Bright Angel Trail.

To find photos, maps, where to stay, and other tourist information, read Grand Canyon National Park trip site .

Getting from Greenville to Grand Canyon National Park by car takes about 29 hours. Due to the time zone difference, you'll gain 2 hours traveling from Greenville to Grand Canyon National Park. Traveling from Greenville in December, expect nights in Grand Canyon National Park to be cooler, around -11°C, while days are little chillier, around 8°C. Wrap up your sightseeing on the 16th (Mon) to allow time to drive to Las Vegas.

Nicknamed the "Entertainment Capital of the World," Las Vegas sits in the middle of a desert in the southern section of Nevada.

You'll discover tucked-away gems like Dig This and Wayne Newton's Casa de Shenandoah. The adventure continues: let your taste buds guide you at a local gastronomic tour, have some family-friendly fun at Axe Monkeys, admire the local landmark of Fountains of Bellagio, and have fun at Strip Gun Club.

To find photos, more things to do, ratings, and tourist information, read Las Vegas tour itinerary planning site .

You can drive from Grand Canyon National Park to Las Vegas in 4.5 hours. Other options are to take a shuttle; or do a combination of bus and flight. The time zone difference moving from Mountain Standard Time (MST) to Pacific Standard Time (PST) is minus 1 hour. When traveling from Grand Canyon National Park in December, plan for a bit warmer days in Las Vegas, with highs around 16°C, while nights are much hotter with lows around 4°C. Finish up your sightseeing early on the 19th (Thu) so you can travel to Los Angeles.

Surrounded by mountain ranges, forests, valleys, beaches, and deserts, the metropolitan area of Los Angeles is home to over 17 million people.

Explore hidden gems such as The Huntington Library, Art Collections and Botanical Gardens and Battleship USS Iowa BB-61. Get out of town with these interesting Los Angeles side-trips: Disneyland Park (in Anaheim) and Heisler Park (in Laguna Beach). There's more to do: see the interesting displays at The Nethercutt Collection and get to know the fascinating history of Hollywood Walk of Fame.

For ratings, more things to do, maps, and tourist information, read our Los Angeles trip itinerary maker tool .

You can fly from Las Vegas to Los Angeles in 4 hours. Alternatively, you can drive; or do a combination of flight and bus. Plan for a bit warmer temperatures traveling from Las Vegas in December, with highs in Los Angeles at 24°C and lows at 11°C. Wrap up your sightseeing on the 22nd (Sun) to allow time to travel to San Francisco.

San Francisco is a top holiday destination featuring scenic beauty and great ethnic and cultural diversity.

Kick off your visit on the 22nd (Sun): take in the views from San Francisco Bay Bridge, head off the coast to Alcatraz Island, and then get the lay of the land with Walking tours. On the 23rd (Mon), you'll have a packed day of sightseeing: see the interesting displays at Cable Car Museum, then don't miss a visit to Golden Gate Bridge, then immerse yourself in nature at Marin Headlands, and finally appreciate the extensive heritage of Filbert Steps.

To see more things to do, reviews, other places to visit, and other tourist information, go to the San Francisco trip planner .

Fly from Los Angeles to San Francisco in 4 hours. Alternatively, you can do a combination of flight and train; or drive. Expect a bit cooler weather when traveling from Los Angeles in December: highs in San Francisco hover around 17°C, while lows dip to 8°C. On the 24th (Tue), wrap the sightseeing up by early afternoon so you can travel back home.