Westminster Abbey, St Paul's, the London Eye – these aren't just some of the city's most astonishing sights, they're some of the most breathtaking icons of sightseeing gold in the western world. London has been home to revolutions and fiery infernos, scandals, dynasties, religious icons, and pure, unadulterated human innovation. No traveler to London needs to be told that the city is jam-packed with history, culture, architectural behemoths, and invaluable art ( --at least we hope they don't!), but London is nothing except fluid and ever-changing, reinventing itself year on year to honor its rich history and new visionaries. In a nutshell: keeping up with London is hard work! And we've just about managed to whittle down its countless treasures to the ten that truly can't be missed. Many require walking shoes (that heath gets muddy!), some require floatation jackets, and one requires a bit of a taste for danger. And what with London's long-standing respect for its broke students and crafty bohemians, not all of them require loads and loads of dosh. But we're certain that hitting these landmarks will ensure memories to last a lifetime, and potentially overload your Instagram feed. Get those cameras ready and those coffees in take away cups.