Horse racing is often seen as an upper class sport.
Flat racing is a race in which horses are raced from point to point.
A steeplechase is a race in which the horse jump over obstacles.
The Grand National
The Grand National is a steeplechase held at Aintree Racecourse. It has the largest prize for horse racing in Europe. Last years winner was Rule The World ridden by David Mullins.
Red Rum won the race 3 times in 1973, 1974 and 1977.
Royal Ascot is a series of 30 different races held over 5 days at Ascot racecourse. It is attended by the Queen and other royalty.
Multi-day racing meet-ups often include a ladies' day which dates back to when women often weren't allowed everywhere men were. These days ladies are often given a significant discount on entry and there is often a prize for the best dressed lady.
Especially with Steeplechases, it is possible for horse to get injured either by falling or colliding with an obstacle. If the horse is beyond saving it is often put down.