Photos: The Kentucky Derby and the world's largest 4K video board

The new scene at Churchill Downs

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The first call to post on the Big Board

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The famed Twin Spires

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Close-ups of the race for all fans to see

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The Big Board dwarfs the original screens

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Many people took selfies with the Big Board throughout the evening

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Social media integration

By using the hashtag #kyderby, fans can see themselves up on the Big Board.

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The Big Board has a 170 degree view around the track

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The 4K resolution allows for detailed close-up shots

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Up-close of the Derby trophy

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The focal point of opening night

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Churchill Downs unveiled the Big Board by showing scenes of the grounds

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Many photos with the Big Board on opening night

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The 170-foot tall Big Board

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The bright Big Board at night

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In the Paddock, the betting odds are always showcased

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People watching over the Paddock on opening night

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About 150,000 people attend Derby every year

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Quotes about thoroughbreds on a wall of the Derby Museum

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Lonely old TVs at Churchill Downs

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Horses are warmed up during Dawn at the Downs

Dawn at the Downs is an annual event during Derby week, where fans can visit the track very early to see Derby contenders and other horses warm up before a day of races.

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Barbaro, the 2006 Derby winner, has a statue outside

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Betting at the track

There are 2,200 other televisions at the track that showcase races, betting odds, and other industry news.

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People enjoy the night racing scenery

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Screens near the winner's circle

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A horse crosses the finish line during warm up

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This is the 140th running of the Kentucky Derby

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The crowd on "Therby"

"Therby" is the Thursday before the Derby, when a lot of locals go to the track.

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Guests of the Derby Museum can sit on a horse in the starting gate

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Photos of jockeys line the wall at the Derby Museum

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A Kentucky sunset during opening night

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A man reads a racing form before the races begin

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Churchill Downs installed new lights several years ago for night racing

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One huge party for opening night of the spring meet

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Horses warm up at Dawn at the Downs

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Horseshoes line the wall at the Kentucky Derby Museum

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People enjoy the first night of races

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A beautiful sky for opening night

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A statue of Aristides, the first Derby winner in 1875

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Empty betting windows before the races start for the day

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The finish line

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