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the dzongs and festivals of Bhutan
polar bears of Svalbard
the spiritual awe of Canyon de Chelly
awake to the foggy quiet on Doubtful Sound, New Zealand
hike to the towers in Torre de Paine, Chile

Muir Woods National Monument, giant redwoods in Northern California. About 30 minutes North of San Francisco.

You should include Thailand; especially, Northern Thailand (Chiang Mai.) The mountains and temples can match anything else in the world!

Stonehenge is a must-see.

Ireland, Peru, Brazil, Isreal, Japan,China.

The Amazon in Peru was #1 on my list and it remains as #1 as best places to go. I had finished my cancer treatment and only had fuzz for hair. I went on an overnight campout, hiking 4 hours there, shakily walking on logs or limbs over streams while being told by the guide "In the Amazon, you can do anything!"
The wildlife, the flora are unrivaled. The experience taught me that "I can do anything anywhere"!

I should like to suggest the country of Turkiye wherein There are a plethora of places to see/explore. Within Turkiye five places hold particular visual/sensory pleasure: Istanbul,Cappadocia,Ephesus,Mt. Nemrut, and Pamukkale.

City - Jerusalem, Cairo, Istanbul, L'viv, Krakow

Holy/Ancient site - Wailing Wall, Dome of the Rock, Luxor Temple, Valley of the Kings

Natural site - Capadocia region, Mt. Kilimanjaro, Carpathian mountains in Romania, Black Sea coast in Turkey

There is always someplace else a true traveler wishes to go, but I'm not one of them. No thank you to rain forests of any kind, too difficult to aclimatize. But, I say yes to Barcelona, Malta, Rome, Florence, the Alps, Bavaria, Arosa, Vienna, Bern, Yorkshire, Galway, Glasgow, Alsace-Lorraine, Cape Town, Buenos Aires, Patagonia, Homer, Telluride, White Mtns, AZ, Bar Harbor,Canon Beach, New Orleans, NYC, Montreal, Gulf Of Mexico, and so many more places that I can't remember the names. Travel like the locals, eat where they do, get to know how a place smells, placement of the sun, kindness of all people to the solo traveler, beer everywhere.

Machu pichu is first on my list of places to see.

I would like to see the Mississippi River from the deck of a paddle wheeler.

Adventure:
- Walk the 800KM Camino Francés (Roncesvalles to Camino de Santiago de Compostela, Spain)

Sacred place:
- The Notre Dame du Haut chapel, Ronchamp, Franche-Comté, France

Natural wonder:
- Jiuzhaigou Valley, Sichuan, China

Building big:
- Cristo Redentor, Corcovado, Brazil

Rio de Janeiro From the top of Sugarloaf moutain looking out over Copacabana beach. You can see other parts of the city as well. Centro, Ipanema, Christ statue. Beautiful.

Peutero Gallaria, Philipines Atlantis Diving resport. beautiful and great place to stay. Fantastic food, and great staff. Nice to visit whether you dive or not.

Venice-incredible cappachino and great colors on the buildings. I didn't know there were no roads or cars! Just walkingways and canals for boating, depending where you are going.

I want to see India and Nepal. The Taj Mahal and the Hymalaya mountains (from the base).

I am entranced by the gorillas of Rwanda, the great silverbacks are amazing and one day soon I hope to travel to Rwanda to see them.

A drive through the Sahara desert is something I can recommend to everyone.

In addition to the 43 mentioned, please consider also

Lake Atitlan in Guatemala, Geiranger Fjord in Norway, Gullfoss Falls in Iceland, Lake Titicaca in Peru (hurry, it's on its way to ruination), Yosemite National Park - for spectacular scenery

and if archaeology is of interest, Copan in Honduras (much better site than Tikal), Petra in Jordan, and many Roman ruins in Turkey,

Vienna at Christmas, St. Petersburg and Moscow, Prague, follow the Rhine and the Volga, explore Paris, Nice, and all of France. See the Isle of Skye. Big Sur. Tokyo, and farther up the Snow Monkeys of Japan's mountains. So many more places. The desert here in the US when all the cati are in bloom, it can't be better than that.

The Alps, Nepal/Mt. Everest, Viking ruins in northern Newfoundland, lands above the Arctic Circle such as Nunavot, Aix, all the countries of my ancestors

Santorini,Greece ( one of a kind)
Kyoto,Japan (the old,traditional part of town)
Andaman sea,Malaysia & Thailand
Kenya,Masai Mara villages
Niagara falls,USA & Canada

Jerusalem. A holy city of the three great monotheistic faiths. Cultural crossroads. The last three thousand years are as current as todays headlines.

Rio de Janeiro and the statue of Crist the redeemer.
Opera house in Sydney.
Zoo at Singapore.
Gaudi art in Barcelona.
Kremlin and the treasures inside, in Moscow.
Hermitage museum in Saint Petersburg.
Louvre museum.
Old city in Havana(Cuba).
Cape town and the table mountain.
Cu chi tunnels some kmeters far away from Saigon(Vietnam).
Costa Rica jungles.
Angkor complex in Siem Reap (Cambodia).
Giza pyramids (Cairo).
Chichen Itza pyramid(Mexico)
Machu Picchu
Scrabble (Traffic, the road with 5 destinations) -- Shibuya area (Tokyo)
Watching football in La Bombonera stadium, the home of Boca Juniors.
Old city (Cartagena -- Colombia) ...maybe the most beautifull colonial style city, all over the world...!!!
Parthenon (Athens)

denali national park, arches national park, glacier national park

You missed HeliHiking in the Bugaboos in Canada. I have been to most all of the places on your list, but the Bugaboos beats most on your list.

Ever heard of the 2/3 of the planet you forgot? Whale sharks off Isla Holbox, rare species in Indonesia and on the Great Barrier Reef, and many more underwater locations. SCUBA is the best way to travel, both near and far.

Maldives

Santorini in Greece is unique in the world
Acropolis
Persepolis in Iran
Isfahan city in Iran
Laha in Tibet
Iguazu Fall
Amazon
Petra in Jorda and cape town

Orthodox monasteries in Greece: Mount Athos, Meteora
Beaches in Aegean islands
Delphi, Olympia
Dubrovnic, Rome, Venice, Tirolo villages

Going-To-The-Sun Road in Glacier National Park. Best views from any 43 mile drive in the USA! I know cuz I've driven it - both ways! Thanks for being one of my fave magazines ;-)

Italy's Amalfi Coast and the Island of Capri are beautiful ,if you're in the neighborhood visiting Pompeii. Also while in Italy one should visit what I think of as GOD'S country...Tucany.

Love to travel and see the world! One adventure that is still on my to do list is trans siberian express Russia to Beijing. Maybe for 2012! This year India in November!

boldt castel in 1000 islands, yosemite nat park, follow the oregon trail east to west, nova scotia, train trips around the usa,travel the pacific coast from oregon to mexico. desmet south dakota again.

The Western Wall & the Dome of the Rock, Jerusalem.

Polonuwara in sri lanka is incredible!

I would like to see Pompeii

Malta,a center-point of the long, long history of the Mediterranean. See remains of a huge-stone temple(?) that pre-dates Stonehenge by at least 1,000 years, medieval fortifications built by the Knights of Malta including the walled capital city of Valletta, the WWII command center in a cave, thousands of yachts in a variety of ports.

ADD:
La Sagrada Familia, Barcelona -- heck, the whole town of Gaudí, Picasso, Dali and Catalunya.

The Alhambra Granada, Spain - not the gloppy Spanish castle but the Moorish part (It took my wife and I almost 5 hours to appreciate)

WASHINGTON DC - of the 16 capitals I have visited it is by far the most interesting. Especially the Smithsonian museums. My two musts when I visit are the Museum of American History and the Jefferson Memorial.

And since we're including capitals, the Muséo Antropologico in Mexico City.

Rocky Mountains at Jasper, Alberta, Canada

Many of yours are mine, too, but New Zealand's natural beauty calls me!

Natural Wonders: Banff & the Canadian Rockies, the Grand Canyon, the Great Barrier Reef & Hawaii (the Big Island, Maui, Kauai)
World-Class Cities: New York, DC, London, Paris, Venice, & Jerusalem Other Manmade Wonders: the Pyramids, the Great Wall, the Taj Mahal, the Sydney Opera House & Harbor Bridge
Amusement Parks: Tivoli Gardens & Disney World

Sunset in Cape Sounion, Greece

Le Merveille Mont St Michel, exquisite and mysterious

my life list is to see the great dragon of Shrinoisa.
That is the famous asian temple deep inside the cave, with the flowing lava and diamond covered floor.

San Francisco bay,The Silk Route, the Nasca lines, Athens, Greece, Mykonos, Rome, The Trevi Fountain, The Vatican, and the Orient Express,the Anne Frank house in the Netherlands.

where did the "gazing at the Colosseum at night" go?!?!!?!

I'll gladly go to all 43 of the places on your list, but i would add a few: The Amazon River (twice: at flood stage & at lowest water stage), Patagonia, The North African sites of Roman and Phoenician cities, Taklamakan Desert, Silk Road, Trans Siberian Railroad,and Ayers Rock,

hike on mount rainier Aventino and Celio hills in Rome Dolomiti San Gimignano