What are the four major professional tennis tournaments where are they held?

The four major professional tennis tournaments consist of the Australian Open, French Open, Wimbledon and the US Open. These four major tournaments are considered the "Grand Slam" tournaments.

The Australian Open is the first of the four to be played each year, with the event occurring in the second half of January.

The French Open is the second Grand Slam to be played, and it occurs around late-May to early June.

Wimbledon, the third Grand Slam of the year, takes place shortly after the French Open. It occurs from late June to early July.

The US Open is the fourth and final Grand Slam to take place each year. The only Grand Slam played on US soil, it takes place from late August to the first half of September.