Best Photos of August 21: Hungary's national day to the Northern Lights in Canada

Hungary's parliament building illuminated as part of celebrations of the country's national day, in Budapest. AP
Hungary's parliament building illuminated as part of celebrations of the country's national day, in Budapest. AP
Kites are flown during a tribute to Palestinian children in Caracas, Venezuela. EPA
Kites are flown during a tribute to Palestinian children in Caracas, Venezuela. EPA
African lion Tau celebrates his seventh birthday at Noah's Ark Zoo Farm in Wraxall, UK. PA
African lion Tau celebrates his seventh birthday at Noah's Ark Zoo Farm in Wraxall, UK. PA
A boy cools off under a waterfall on the outskirts of Sowari, in Khyber Pakhtunkhwa province, Pakistan. Reuters
A boy cools off under a waterfall on the outskirts of Sowari, in Khyber Pakhtunkhwa province, Pakistan. Reuters
A concert at the Champ-de-Mars in Paris as part of the 46th edition of a day of activities for children who do not go on holiday. AFP
A concert at the Champ-de-Mars in Paris as part of the 46th edition of a day of activities for children who do not go on holiday. AFP
Ships and boats in a parade during the 50th edition of Sail Amsterdam festival. AFP
Ships and boats in a parade during the 50th edition of Sail Amsterdam festival. AFP
Villagers take a tractor trailer to an annual fair in Ajmer, India. AFP
Villagers take a tractor trailer to an annual fair in Ajmer, India. AFP
The northern lights near Yellowknife in Canada's North-West Territories. AP
The northern lights near Yellowknife in Canada's North-West Territories. AP