22 days in United States Itinerary

Nicknamed the "Emerald City" because of its abundant evergreen trees, Seattle is the cultural and business center of the Pacific Northwest, as well as a popular holiday destination.

On the 18th (Wed), look for gifts at The Elliott Bay Book Company, get a taste of the local shopping with Pike Place Market, and then browse the range of quality goods at NORDSTROM. On the 19th (Thu), you'll have a packed day of sightseeing: appreciate the extensive heritage of Pioneer Square, then take a leisurely stroll along Hiram M. Chittenden Locks, then take in panoramic vistas at Space Needle, and finally take in the exciting artwork at Chihuly Garden and Glass.

For photos, where to stay, traveler tips, and more tourist information, go to the Seattle trip maker tool .

London, UK to Seattle is an approximately 12-hour flight. You can also do a combination of flight and bus. The time zone difference when traveling from London to Seattle is minus 8 hours. Expect a daytime high around 30°C in July, and nighttime lows around 18°C. Finish your sightseeing early on the 20th (Fri) so you can travel to San Francisco.

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

On the 20th (Fri), stop by Boudin Bistro and then head off the coast to Alcatraz Island. On the next day, hunt for treasures at Ferry Plaza Farmers Market, browse the different shops at Ferry Building Marketplace, shop like a local with Ghirardelli Square, then take in the views from Golden Gate Bridge, and finally enjoy some diversion at RocketBoat.

For maps, reviews, other places to visit, and tourist information, read our San Francisco travel planning website .

Traveling by flight from Seattle to San Francisco takes 4 hours. Alternatively, you can do a combination of flight and train; or drive. While traveling from Seattle, expect a bit cooler days and about the same nights in San Francisco, ranging from highs of 26°C to lows of 16°C. Wrap up your sightseeing by early afternoon on the 22nd (Sun) to allow enough time to drive to Yosemite National Park.

Massive granite mountains, towering waterfalls, groves of Giant Sequoia trees, and wilderness as far as the eye can see distinguish the landscape of Yosemite National Park.

Get outdoors at Tuolumne Meadows and Tioga Pass. And it doesn't end there: explore the striking landscape at Sentinel Dome, identify plant and animal life at Nature Center at Happy Isles, make a trip to Olmsted Point, and hike along Panorama Trail.

Planning Yosemite National Park trip won't be overwheling when you use's Insprock itinerary maker.

Drive from San Francisco to Yosemite National Park in 4.5 hours. Alternatively, you can do a combination of bus and taxi; or do a combination of subway, flight, bus, and taxi. When traveling from San Francisco in July, plan for a bit warmer days and slightly colder nights in Yosemite National Park: temperatures range from 32°C by day to 8°C at night. Wrap up your sightseeing on the 26th (Thu) early enough to travel 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.

Take a break from the city and head to Rim Trail and South Kaibab Trail. On the 28th (Sat), hike the day away at Bright Angel Trail. There's still lots to do: take in breathtaking views at Grand Canyon South Rim, stop by Canyon Village Marketplace, and don't miss a visit to Powell Point.

To find ratings, more things to do, photos, and other tourist information, read Grand Canyon National Park trip planner.

You can do a combination of taxi, bus, and flight from Yosemite National Park to Grand Canyon National Park in 13 hours. Alternatively, you can do a combination of taxi and bus. Due to the time zone difference, you'll lose 1 hour traveling from Yosemite National Park to Grand Canyon National Park. Traveling from Yosemite National Park in July, you can expect nighttime temperatures to be a bit warmer in Grand Canyon National Park, with lows of 12°C. Finish up your sightseeing early on the 30th (Mon) so you can travel to Great Smoky Mountains National Park.

Great Smoky Mountains National Park contains some of the highest mountains east of the Mississippi River, but it's the ease of access that makes this national park the United States' most visited.

Escape the urban bustle at Mount LeConte and Roaring Fork. Next up on the itinerary: explore the striking landscape at Chimney Tops, tour the pleasant surroundings at Chimneys Picnic Area, and hike along Grotto Falls Trail.

For where to stay, photos, traveler tips, and other tourist information, refer to the Great Smoky Mountains National Park attractions planning tool .

Getting from Grand Canyon National Park to Great Smoky Mountains National Park by combination of bus and flight takes about 11.5 hours. Other options: take a bus; or do a combination of bus and train. The time zone difference moving from Mountain Standard Time (MST) to Eastern Standard Time (EST) is 2 hours. Traveling from Grand Canyon National Park in July, expect a bit warmer with lows of 24°C in Great Smoky Mountains National Park. Wrap up your sightseeing on the 3rd (Fri) to allow time to travel to New York City.

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

Head to Fifth Avenue and Strand Bookstorefor plenty of shopping. Change things up with a short trip to Bronx Zoo in Bronx (about 42 minutes away). There's still lots to do: take in the pleasant sights at Central Park, stop by Tiffany & Co., shop like a local with Shopping Girlfriend NYC, and pause for some photo ops at Statue of Liberty National Monument.

For where to stay, other places to visit, photos, and other tourist information, read our New York City road trip website .

You can do a combination of flight and bus from Great Smoky Mountains National Park to New York City in 5 hours. Other options are to do a combination of flight and train; or take a bus. In August, daytime highs in New York City are 34°C, while nighttime lows are 26°C. Wrap up your sightseeing on the 7th (Tue) to allow time to travel back home.