7. The Great Barrier Reef, Australia
The Great Barrier Reef is one of Australia's most-visited attractions. There are over 344,000 square kilometres of colourful coral and underwater wildlife to see here, from sea turtles to sharks, whether you're in a glass-bottomed boat, snorkelling on the surface or scuba diving. The reef is endangered though, so if you want to tick off this seven wonders list, head here first.
Dreamstime.com: Bin Zhou / Dropu
6. Mount Everest, Nepal
At 8848m, Everest is the tallest mountain in the world, earning it a deserved place on this seven wonders of the world list. Hundreds of people scale its slopes to base camp every year (so much so, there's even sometimes a queue to get to the top) to see the view from the roof of the world. Those that can't hack the hike can take a flight around the summit instead.
5. The aurora borealis
Not a place but a natural phenomenon, the aurora borealis (also known as the northern lights) also got your vote as one of the seven wonders of the world. This natural light show, caused by collisions between electrically charged particles, is what draws so many people to northern Europe (try Norway, Iceland or Sweden for a strong chance of a sighting), and it's a truly magical experience when the colours fly through the sky.
Northern lights in Iceland © Anna Om/Shutterstock
Angkor Wat is a staple destination on the Southeast Asia backpacker trail, and for good reason. This sprawling complex of ancient Buddhist (though originally Hindu) temples is an atmospheric maze of crumbling structures, hugged by the gnarly roots of the overgrown jungle that surrounds them. Sunrise is the most popular time to visit, when hundreds gather to see the light come up from behind the main temple at the West Gate.