The 2014 Winter Olympics are here. Take a look at one of the most expensive and controversial Olympic games in history.
Cost: At least $50 billion, including infrastructure work in and around Sochi
Athletes: 6,000 from 85 countries (plus 1,650 Paralympians from 45 countries)
Sports: 15, including figure skating, snowboarding and hockey
Number of events: 89 -- of which 12 are new
Days of competition: 17, plus the Opening Ceremony
Time the Opening Ceremony began: 20:14 local time
Number of police officers deployed for the Games: 25,000, plus 8,000 security forces from other agencies
Number of signatures on a petition by gay rights group All Out calling on Russia to eliminate "anti-gay laws," violence and discrimination against gay people: 404,139 as of November 5, 2013
Average temperature in Sochi in February: 8.3 Celsius (47 Fahrenheit) -- the warmest ever at Winter Olympics
Average price of lunch for one at the Olympic Park: $15
Number of people the Olympic Park holds: 75,000
Number of volunteers helping with the Games: 25,000
Expected television audience: 3 billion
Distance the Olympic torch traveled to the games: 40,000 kilometers (nearly 25,000 miles), including into space, over 123 days
Click here to check out Olympic mascots and their meanings.