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

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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

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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

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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

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September 13, 2009 photo of Andreas Lubitz, who is believed to have deliberately crashed Germanwings Flight 9525 into a mountain in southern France on March 24, 2015, killing all 150 people on board. Getty Images/Getty Images hide caption

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The headquarters of Deutsche Bank in Frankfurt. Germany's largest bank has been hit with a $2.5 billion fine for manipulating a key interest rate. Seven other banks in various countries have also been fined in the far-reaching scandal. Michael Probst/AP hide caption

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Former SS guard Oskar Groening, now 93, enters a car after the first day of his trial in Lueneburg, Germany, on Tuesday. He faces 300,000 counts of accessory to murder, in a case that tests the argument that anyone who served at a Nazi death camp was complicit in what happened there. Markus Schreiber/AP hide caption

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Greek Orthodox priest Apostolos Stavropoulos, 41, lights a torch inside the mausoleum in the village of Distomo in June 2013 on the eve of the 69th anniversary of the massacre committed by the Nazis during World War II. The remains of the more than 200 villagers killed, including women and children, are kept here. John Kolesidis/Reuters /Landov hide caption

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A German police investigator carries a box after searching an apartment believed to belong to the crashed Germanwings flight 4U 9524 co-pilot Andreas Lubitz in Duesseldorf, on Thursday. Wolfgang Rattay/Reuters/Landov hide caption

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Students mourn in front of their school in Haltern, Germany, on Wednesday, a day after the Germanwings plane crash. Sixteen high-schoolers and two teachers from the school were among the 150 people onboard the plane. Martin Meissner/AP hide caption

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Lamya Kaddor teaches Islamic studies in Germany. She's written a new book, Zum Toeten Bereit (Ready To Kill), about the experience of having five former students flee to Syria to join jihadist groups. Andre Zelck/Courtesy of Piper Verlag GmbH hide caption

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Berlin residents Mareike Geiling (left) and her boyfriend, Jonas Kakoschke, speak with their roommate, a Muslim refugee from Mali. Geiling and Kokoschke helped launch a website that matches Germans willing to share their homes with new arrivals. Soraya Sarhaddi Nelson/NPR hide caption

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Young fans of the German national soccer team drink iced tea in July 2010 as they watch the FIFA World Cup semi-final match Germany vs. Spain in an Arabic cafe in Berlin's Neukölln district. The neighborhood has gentrified rapidly in recent years, but many of the white families moving in leave once their children reach school age. Local groups are trying to change that. AFP/AFP/Getty Images hide caption

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Earlier this month, Dr. Sadiqu al-Mousllie, accompanied by his family and a few members of their mosque, stood in downtown Braunschweig, Germany, and held up signs that read: "I am a Moslem. What would you like to know?" in an effort to promote dialogue between Muslims and non-Muslims. Courtesy of Sarah Mousllie hide caption

itoggle caption Courtesy of Sarah Mousllie