Until Toronto hosted the 2015 Pan Am Games, City Hall—two curved modernist office towers that look like a pair of parentheses surrounding a period—lacked tourist allure. But enter a photogenic, rainbow-hued, eye-catching TORONTO sign, and voilà! A star was born. Found in the square directly in front of City Hall, the illuminated sign, originally meant to be a temporary attraction, has become one of the city’s most photographed structures, along with the CN Tower. The sign's O's, in particular, are popular with canoodling couples.