Machu Picchu, Peru
Several multi-day treks terminate at Machu Picchu, but it's also possible to take a train from Cusco to Aguas Calientes, and climb a steep flight of stairs or bus up to the site. Only the first 400 daily visitors are granted entry to Wayna Picchu, a separate set of ruins overlooking the main complex. Tucan Travel offer a range of tour options.
Mont-Saint-Michel is serviced by buses/tours from Rennes and Saint-Malo, but it's also possible to lodge in one of Mont-Saint-Michel's small hotels. For more info, visit the Normandy Tourism website.
Buses and day/overnight tours run from Jordan's capital Amman and the port city of Aqaba. It's also possible to organize tours from Egypt, and the Israeli resort town of Eilat. For longer stays, bunk down in Wadi Musa, Petra's neighboring town. For more info, visit the Jordan Tourism website.
Pyramids of Giza, Egypt
Just 25 kilometers southwest of Cairo along the Nile River, the complex is most easily visited on a day trip from Egypt's capital. For more info, visit the Egypt Tourism website.
Rapa Nui, Chile
While it's possible to access Easter Island by air from Tahiti, most visitors opt for the five-and-a-half hour flight from Santiago, Chile. For more info, visit the Chile Tourism website.
Serengeti National Park, Tanzania
The short October/November and March/April rainy seasons notwithstanding, the Serengeti, usually accessed via Kilimanjaro or Nairobi airports, offers great game viewing year-round. For tours, visit the Audley Travel website.
Sigiriya, Sri Lanka
The central Sri Lankan site is located two-three hours by local bus from the city of Kandy (via Dambulla, home to a massive cave temple complex). It's also possible to organize a tour or personal driver from Kandy. For more info, visit the Sri Lanka Tourism website.
Situated just a few minutes drive from the small Yucatan Peninsula township of Tulum, the easily accessible ruins lie about 60 kilometers south of the larger touristic township of Playa del Carmen, and a further 60 kilometers from Cancun. For more info, visit the Mexico Tourism website.
Just south of Sicily, Malta is connected by flights from across Europe. It's possible to lodge in Valletta, but the bulk of visitors make for the tiny nation's beach resorts. For more info, visit the Malta Tourism website.
Venice and its lagoon, Italy
Venice is served by nearby Maro Polo and Treviso airports, while trains arrive at the Venezia Santa Lucia train station in the city's west. For more info, visit the Italy Tourism website.
Yellowstone National Park, United States
Located around 100 kilometers from Jackson Hole, the closest major airport hub, the park has five main access points. Most visitors choose to self-drive throughout the park, camping en route. For more info, visit the Wyoming Tourism website.