The classic races the 1,000 and 2,000 Guineas are held at which racecourse?

Newmarket Racecourse, is a British Thoroughbred horse racing venue in the town of Newmarket, Suffolk, comprising two individual racecourses, the Rowley Mile and the July Course. Newmarket is often referred to as the headquarters of British horseracing and is home to the largest cluster of training yards in the country and many key horse racing organisations, including Tattersalls, the National Horseracing Museum and the National Stud. Newmarket hosts two of the country's five Classic Races - the 1,000 Guineas and 2,000 Guineas, and numerous other Group races. In total, it hosts 9 of British racing's 36 annual Group 1 races.

Racing in Newmarket was recorded in the time of James I. Charles II was known to attend races on Newmarket Heath with his brother, the future James II. The first recorded race was a match for £100 between horses owned by Lord Salisbury and Marquess of Buckingham in 1622. The racecourse itself was founded in 1636.