More than 700 horses are expected to compete this weekend as the three day eventing season moves to North Norfolk.
The Houghton Hall International attracts the world's top riders with the sport still basking in the glow of last summer's Olympics.
The Houghton International is now in its seventh year. Big names due to ride this weekend include Team GB's Zara Phillips and William Fox-Pitt and the recently knighted Sir Mark Todd from New Zealand.
Click below to watch a report by ITV News Anglia's Sport Correspondent Donovan Blake: