Europe's refugee crisis in 20 photos

So far in 2015, more than 300,000 refugees and migrants crossed the Mediterranean, exceeding the number in all of 2014, which was 219,000, a United Nations spokeswoman said. Click through to see images from the refugee crisis in Europe.

Europe's refugee crisis in 20 photos

Europe's refugee crisis in 20 photos

A Syrian refugee, holding his son and daughter, cries tears of joy after their boat arrived on the Greek island of Kos on August 15. The island in the Aegean Sea has been overwhelmed by Syrian refugees.

Europe's refugee crisis in 20 photos

A migrant in Gevgelija, Macedonia, tries to sneak on a train bound for Serbia on August 17. More than 1,000 migrants enter Macedonia daily from Greece, heading north through the Balkans on their way to more prosperous countries in the European Union.

Europe's refugee crisis in 20 photos

A French police officer tries to prevent migrants from heading for the Channel Tunnel to England in the northern French city of Calais on June 17.

Europe's refugee crisis in 20 photos

Refugees rescued off the Libyan coast peer out a gate of the Norwegian ship Siem Pilot to get the first sight of Sardinia as they sail in the Mediterranean Sea toward Cagliari, Italy, on September 3.

Europe's refugee crisis in 20 photos

A Belgian navy sailor throws life vests to refugees during a search-and-rescue mission in the Mediterranean off the Libyan coast on June 23.

Europe's refugee crisis in 20 photos

Migrants board a train at Keleti station in Budapest, Hungary, after the station was reopened on September 3.

Europe's refugee crisis in 20 photos

Europe's refugee crisis in 20 photos

Migrants wait to receive food at a railway station in Milan, Italy, on June 11.

Europe's refugee crisis in 20 photos

Local residents and rescue workers help migrants from the sea after a boat carrying them sank off the island of Rhodes, Greece, on April 20.

Europe's refugee crisis in 20 photos

A group of refugees cross a highway near Horgos, Serbia, toward the Hungarian border on August 28.

Europe's refugee crisis in 20 photos

Europe's refugee crisis in 20 photos

Syrian refugees sleep on the floor of a train car taking them from Macedonia to the Serbian border on August 30.

Europe's refugee crisis in 20 photos

Migrants wait to receive necessary documents at a refugee center in the town of Presevo, Serbia, on August 26.

Europe's refugee crisis in 20 photos

A migrant jumps a fence in Calais, France, as he attempts to access the Channel Tunnel leading to England on August 5.

Europe's refugee crisis in 20 photos

Policemen try to disperse hundreds of migrants by spraying them with fire extinguishers during a registration procedure at a stadium in Kos, Greece, on August 11.

Europe's refugee crisis in 20 photos

Refugees walk past people on a beach in Calais, France, during a demonstration on August 8.

Europe's refugee crisis in 20 photos

Military personnel carry a coffin during an April 23 funeral service in Valletta, Malta, for 24 migrants who drowned while trying to reach the southern coast of Italy.

Europe's refugee crisis in 20 photos

A refugee holding her child is detained at a train station in Bicske, Hungary, on September 3.

Europe's refugee crisis in 20 photos

Syrian refugees walk the rails as they try to cross from Serbia into Hungary near Horgos on September 1.