Los Angeles, UNITED STATES
Canadian Prime Minister Justin Trudeau signs a visitor's book while visiting Griffith Observatory's original...
Canadian Prime Minister Justin Trudeau (R), flanked by Los Angeles Mayor Eric Garcetti (L) signs a visitor's book while visiting Griffith Observatory's original 12-inch Zeiss refracting telescope in Los Angeles, California, U.S., February 10, 2018. REUTERS/Irfan Khan/Los Angeles Times/Pool