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An installation "Monument" by German-Syrian artist Manaf Halbouni stands in front the Brandenburg Gate in Berlin, Germany. The installation, previously displayed in Dresden, displays three upended buses to mimic a defensive barricade erected in Aleppo, in Syria, to protect people from sniper fire.
Antonina Yermokhina, 86, does physical exercises during her daily training session on the embankment of the Yenisei River in the Siberian town of Divnogorsk, Russia.
Revellers walk next to police cars at the start of the carnival season, a season of controlled raucous fun that reaches a climax during the days before Ash Wednesday and the start of Lent, in Cologne, Germany.
People hold lights as they form a ribbon during a demonstration called by pro-independence associations asking for the release of jailed Catalan activists and leaders at Sant Jaume square in Barcelona, Spain.
McMurdo Station, Ross Island, Antarctica, as seen from the radar dome at the top of the hill behind the station on January 22, 2017. This view is to the south, with Observation Hill, at 750 feet tall, in the middle distance. White fuel storage tanks are located at the base of the hill. The flat white to the right of the hill is the annual sea ice of McMurdo Sound.
An emperor penguin, the largest of all penguins, stands proudly on the McMurdo Ice Shelf with Mount Erebus in the distance on January 23, 2017. Mount Erebus is the southernmost active volcano on Earth.
Holy Trinity Church stands illuminated at Russia's Bellingshausen Station on King George Island in Antarctica on February 1, 2015. Holy Trinity is the world's southernmost Eastern Orthodox church and doubles as a light beacon for incoming ships.