All the Photos You Can't Miss from William, Kate, George and Charlotte's Big European Adventure!
But before they go, George got a peek at the inside of a helicopter — and was clearly pretty thrilled.
William also helped George try on a helmet of his own, a highlight of the day to be sure.
Charlotte takes a tumble! The little royal had a weepy moment after falling down on the tarmac.
Afterwards, Charlotte gets a lift from mom on her way to their private plane.
On Friday, Prince William and Princess Kate bid auf wiedersehen to Berlin as they hopped on a train to Hamburg at the Berlin Hauptbahnhof main railway station.
Kate wore a chic purple dress and beige pumps for her departure from Berlin. She accessorized with a small pink clutch.
To end their second day in Germany, William and Kate attended a reception at the "Claerchens Ballhaus," a dance hall in Berlin.
Kate shakes hands with two elaborately-dressed women at the Ballhaus. The space is the last dance hall of its kind in Berlin.
Princess Kate gets her sea legs! The royal participated in a rowing race in Heidelberg — and competed against Prince William!
Cheers to that! Though her team came in second place, Kate celebrates in true German fashion — with a beer.
William and Kate share a sweet moment after the race.
In the city center of Heidelberg, William and Kate greet the crowds that gathered to catch a glimpse of them.
Princess Kate, the scientst! The royal looks through a microscope during a visit to the German Cancer Research Institute in Heidelberg.
Prince William and Princess Kate get a quick lesson in pastry-making from local apprentices in the historic center of the town of Heidelberg, Germany.
Prince William shows off his pretzel-making skills!
Kate rocks a shoulder-baring Alexander McQueen dress for a Garden Party in honor of the Queen's birthday in Berlin.
At the party, William and Kate chat with guests at the British Ambassadorial Residence.
During a visit to Strassenkinder, a German charity that supports disadvantaged young people, William and Kate pose with a group of smiling kids..
Kate gets a big hug from a little boy who is clearly a big fan — he's holding a photo of her!
Arriving at the Chancellery in Berlin, Prince William and Princess Kate chat with Chancellor Angela Merkel.
The royal couple walks through the Memorial to the Murdered Jews of Europe, a Holocaust memorial in Berlin.
William and Kate stand in front of the Brandenburg Gate, one of Berlin's best-known landmarks.
Kate receives a gift — a poster with a photo of her and William and welcome wishes on it — from a member of the crowd in Berlin.
Prince George shows off his handshake just after arriving in Berlin.
Charlotte gets her first bouquet! The little royal holds a teeny-tiny bunch of flowers — that perfectly match her mom's larger one!
Someone isn't a fan of early wakeup calls! Prince George sleepily rubs his eyes on the tarmac in Berlin.
William, Kate, George and Charlotte all hold hands upon arriving in Berlin for the second leg of their European visit.
Bottoms up! Kate samples "fire water," a traditional Polish liqueur with flecks of gold in it.
Crowds clamor for a snap of the royal couple.
Inside the Gdansk Shakespeare Theatre, William and Kate greet actors in an array of costumes.
In Gdansk, Poland, William greets some costumed characters in the town market square.
William signs a book as Kate looks on during their visit to Stutthof.
In a solemn moment, they stand in front of a statue of the Star of David at Stutthof.
On the second day of their Polish visit, William and Kate spent the morning at Stutthof, a former Nazi concentration camp. While there, they met with Holocaust survivors who were returning to the camp for the first time since World War II ended.
Will and Kate smile with drinks in hand at the garden party.
Quick change! For the Queen's Birthday Garden party at The Orangery, in Warsaw's Łazienki Park, Kate wears a new white dress, by Polish designer Gosia Baczynska.
William tries on a pair of virtual reality googles at a Tech Market event today for Polish Business.
Inside the Warsaw Rising Museum, Kate speaks with World War II veterans.
William and President Duda light candles outside of the Museum.
After leaving the Presidential Palace, the two couples walk along the Memorial Wall to victims of the Warsaw Uprising, outside of the Warsaw Uprising museum.
Inside the Presidential Palace, William and Kate have lunch with the President, First Lady and other guests.
The two couples — Prince William and Kate and President of Poland Andrzej Duda and the first Lady Agata Kornhauser-Duda — wave to the crowds while posing outside of the Presidential Palace in Warsaw.
Kate smiles with a bouquet of flowers while greeting a young girl in Warsaw.
Princess Kate greets children who lined the streets of Warsaw, equipped with Union Jacks and Polish flags, with First Lady Agata Kornhauser-Duda.
Gang's all here! The family of four makes their way across the tarmac after arriving in Warsaw. They'll spend two days in Poland and three in Germany during the visit.