While Kate Middleton stunned crowds in a sparkly gown, one man gave new meaning to "Who runs the world?" when he actually ran the world. Athlete Tom Denniss spent nearly two years running the equivalent of a marathon a day, circling the globe on foot to break the world record, and he completed his mission in Sydney, Australia, this week. Meanwhile in America on Wednesday, special ceremonies commemorating 9/11 took place across the country, with memorials in NYC, Washington DC, Virginia, and Pennsylvania. See all that and more with week's best snaps from around the world!
Sun and Sailing
People gathered in San Francisco to watch the America's Cup finals on the bay.
The Duke and Duchess of Cambridge stepped out for the Tusk Conservation Awards at The Royal Society in London, England.
Following a day full of 9/11 memorials across the US , the "Tribute in Light" marked the 12th anniversary of the attacks in NYC.
Hillary Clinton posed for pictures after being recognized with an honorary doctor of law degree from University of St Andrews in Scotland.
Diamond Double Take
The largest flawless white diamond to be auctioned — a whopping 118.28 carats — was estimated at $28 million to $35 million, and it'll be up  for auction in Hong Kong this October.
Tokyo residents went wild at Komazawa Olympic Park when their city was announced as the host of the 2020 Olympics.
Crews rowed along the Thames during the annual Great River Race in London, England, which goes from the Docklands to Richmond.
Flash floods devastated parts of Colorado, and a woman watched as Boulder Creek rushed past following the heavy rainfall.
Up in the Air
Gary Hunt of the UK competed during the Red Bull Cliff Diving World Series at Blue Lagoon in Abereiddy, Wales, diving from a platform 27 meters above the sea.
Herders brought cows into the valley near Bad Hindelang, Germany, for the annual Viehscheid cattle drive.
Stairs With a View
Outside the Tate Modern in London, England, people checked out the "Endless Stair" installation, which is part of the London Design Festival.
Working the Waves
The World Bellyboard Championships took place at Chapel Porth in Cornwall, England, drawing more than a hundred surfers on traditional wooden bellyboards for the charity event.
Solu Bolon Royal Boat athletes competed in Indonesia during the Lake Toba Festival, a historical tradition that focuses on preserving the culture.
Prince Harry found a new friend in a 6-year-old boy during the annual WellChild Awards in London, England, after the boy won the award for most inspirational child.
Birds of a Feather
Thousands of birds took flight together when high tides forced them to seek food in Snettisham, England.
In Sydney, Australia, athlete Tom Denniss celebrated after beating the world record for circling the globe on foot — he ran the equivalent of a marathon every day for nearly two years.
In the Press
Apple CEO Tim Cook took the stage during Apple's product announcement in Cupertino, CA.
A massive fire devastated the Jersey shore town of Seaside Heights, NJ, which recently reopened following the damage of Hurricane Sandy.
Pretty, Pretty Princess
Princess Letizia of Spain met with groups at Zarzuela Palace in Madrid, Spain.
For a Cause
Thousands of participants dressed in pink for the Avon  Walk For Breast Cancer in Prague, Czech Republic.
Firefighters battled a bushfire in Sydney, Australia, with smoke rising into the sky.
A surfer enjoyed the lingering warm weather, waiting in the water at NYC's Rockaway Beach.
Cut the Cake
Prince Charles and Camilla, Duchess of Cornwall, celebrated the 21st anniversary of Duchy products at Clarence House in London, England.