Wilfried Block, the mayor of Friedland, in northeastern Germany, says his shrinking town needs migrants to revitalize the economy. Much of Europe faces a demographic challenge, with retirees on the rise and young workers in decline. Analysts say migrants could be the source of young workers that Europe needs. Esme Nicholson for NPR hide caption

itoggle caption Esme Nicholson for NPR

Russian Foreign Minister Sergey Lavrov, German Foreign Minister Frank-Walter Steinmeier, French Foreign Minister Laurent Fabius and Ukrainian Foreign Minister Pavlo Klimkin pose for a picture ahead of their meeting at the foreign ministry's guesthouse, Villa Borsig, at Lake Tegel in Berlin on Saturday. Tobias Schwarz/AP hide caption

itoggle caption Tobias Schwarz/AP

Migrants seeking asylum wait at the registration center on August 27, 2015 in Ingelheim, Germany. Germany is receiving more than 1,000 new migrants a day from countries like Syria, Eritrea and Afghanistan. In some cases, those migrants include unaccompanied minors, as NPR's Soraya Sarhaddi Nelson found at a similar center in Munich. Thomas Lohnes/Getty Images hide caption

itoggle caption Thomas Lohnes/Getty Images

A migrant girl holds a sign expressing her love to Germany as she arrives at the train station in Saalfeld, central Germany, on Saturday. Hundreds of refugees arrived in a train from Munich to be transported by bus to an accomodation center. Jens Meyer/AP hide caption

itoggle caption Jens Meyer/AP

A man lifts up a child next to a train that was stopped in Bicske, Hungary, on Friday. More than 150,000 people have reached Hungary this year, most coming through the southern border with Serbia. Petr David Josek/AP hide caption

itoggle caption Petr David Josek/AP

Asylum seekers rally in front of the German Office for Migration and Refugees with vests that read "no one is illegal" in Nuremberg on Aug. 17. Migrants from Afghanistan, Ethiopia, Iran and Syria called for faster asylum procedures, the freedom to choose their accommodation and the abolition of camps where they must stay. Timm Schamberger/EPA/LANDOV hide caption

itoggle caption Timm Schamberger/EPA/LANDOV

The Port of Hamburg's trade volume has more than doubled since 1990 and is projected to double again by 2030. Andrew Schneider for NPR hide caption

itoggle caption Andrew Schneider for NPR

Carli Lloyd of the U.S. (in white) celebrates after scoring on a penalty kick Tuesday night in the Americans' 2-0 World Cup semifinal victory against Germany. Elsa/Getty Images hide caption

itoggle caption Elsa/Getty Images

Berlin's Humboldt University — named for its founder, the 19th century philosopher and linguist Wilhelm von Humboldt, and his brother, naturalist Alexander von Humboldt, pictured here — is one of several German universities attracting U.S. students. More than 4,000 Americans are studying in German universities. Markus Schreiber/AP hide caption

itoggle caption Markus Schreiber/AP

White asparagus is the preferred variety in Germany, where it's commonly known as "white gold." When the vegetable is in season, there's a flurry of excitement — representative of the nation's enthusiasm for seasonal eating. John-Erik Jordan hide caption

itoggle caption John-Erik Jordan

People line up at an ATM outside a National Bank branch in Athens last month. Greek bank deposits fell by $6.3 billion in April and on Friday, people withdrew more than $1 billion in a single day. Alkis Konstantinidis/Reuters/Landov hide caption

itoggle caption Alkis Konstantinidis/Reuters/Landov

President Obama drinks a beer as he sits between men dressed in traditional Bavarian clothes during a visit to the village of Kruen, southern Germany, on Sunday, prior to the G-7 summit. Markus Schreiber/AP hide caption

itoggle caption Markus Schreiber/AP