NEW: I've just discovered a tour by National Geographic Expeditions... "Around the World by Private Jet." Cost = $57,000. This one's on my dream list :)

• Water Journeys
• seattle to alaska, united states
• st. lawrence river cruise between kingston and quebec city, canada
• lake nicaragua, nicaragua
• orinoco river cruise and angel falls, venezuela
• amazon river cruise, south america
• yangtze river and the three gorges, china
• milford sound cruise, new zealand
• sampo arctic icebreaker cruise, finland
• antarctica cruise, antarctica
• fjords of norway, norway
• stockholm archipelago steamboat cruise, sweden
• danube river cruise, austria/hungary/germany
• windjammer cruise-sailing, caribbean
• star clipper-sailing to french polynesia
• seychelles islands sailing
• Evia island cruise-sailing, greece
• dalmatian coast cruise, croatia
• turquoise coast cruise, turkey
• greek island-hopping, greece
• nile felucca cruise, egypt
• canoeing the lower zambezi river, zambia/zimbabwe
• rafting the mangoky river, madagascar
• Road Journeys
• the fall in vermont, united states
• lake michigan shoreline, united states
• route 12 in the outer banks/north carolina, united states
• highway 1, miami to key west
• the oregon trail, united states
• route 12 from bryce canyon to capitol reef utah, united states
• the icefields parkway, canada
• crossing the andes from bolivia to chile, bolivia/chile
• the grand trunk road, pakistan/india
• the blue mountains, australia
• the west coast road, new zealand
• iceland's ring road
• highlands of scotland
• the riviera corniches, france
• from lisbon to porto, portugal
• white villages in andalusia, spain
• from cairo to cape town (length of africa)
• crossing the sahara, morocco/western sahara/mauritania
• the garden route, south africa
• Rail Journeys
• trans-siberian railroad, russia/mongolia/china
• national parks of the west, american orient express
• the shinkansen bullet train (nozomi train), japan
• the qingzang railway, china
• eastern and oriental express, singapore/malaysia/thailand
• the palace on wheels, india
• indian pacific, australia
• the transalpine, new zealand
• the bergen railway, norway
• venice simplon-orient-express, england/france/switzerland/austria/italy
• the glacier express, switzerland
• wildlife safari, south africa
• Journeys by Foot
• paria canyon utah, united states
• the john muir trail california, united states
• mckinley bar trail & mcgonagail pass alaska, united states
• the kalalau trail hawai'i, united states
• the inca trail, peru
• the fitzroy massif, argentina
• the torres del paine, chile
• climbing mount fuji, japan
• climbing mount kilimanjaro, tanzania
• the great wall of china
• the headhunters' trail, malaysia
• hill villages of chiang mai, thailand
• the annapurna circuit, nepal
• everest base camp, nepal
• the hunza valley, pakistan
• the tongariro crossing, new zealand
• the grand traverse, new zealand
• tour du mont blanc, france/switzerland/italy
• samaria gorge, crete
• the levadas of madeira, portugal
• the forbidden city, china
• ancient kyoto
• taj mahal, india
• 'amman to aqaba, jordan
• Cultural Journeys
• maya temples, mexico/belize/guatemala
• the forbidden city, china
• ancient kyoto
• taj mahal, india
• 'amman to aqaba, jordan
• england's gardens
• deauville to paris, impressionist france
• strasbourg to amiens to chartres, cathedrals of france
• prague to budapest to salzburg, musical journey to central europe, czech republic/austria/hungary
• venetian legacy, venice to corfu to crete to cyprus
• athens to delphi to olympia and back, classical greece
• cairo to aub simbel, ancient egypt