London ( CNN ) Prince Charles and his wife , Camilla , Duchess of Cornwall , are to spend the next four days in the United States , visiting the nation 's capital and Louisville , Kentucky . The couple arrived in Washington on Tuesday evening . Many people will remember Charles from the day in July 1981 when , as a dashing young prince , he kissed his shy bride , Diana , on the balcony of Buckingham Palace in front of the eyes of the world . But many things have changed since then , including their divorce , Diana 's death in a car accident in 1997 and his marriage to Camilla , now Duchess of Cornwall . Here are five things to know about the Prince of Wales : . While a lot of attention in recent years has been focused on his sons , Princes William and Harry , Charles is next in line to the British throne . His mother , Queen Elizabeth II , has ruled for more than 60 years ( in fact , in September she is expected to overtake her great-great-grandmother Queen Victoria for the title of Britain 's longest-reigning monarch . ) Her longevity is welcomed by her subjects , but it means that Charles , at age 66 , has spent a long time as a monarch-in-waiting . He 's also now a grandfather , thanks to the birth of Prince George in 2013 . Charles and Camilla tied the knot on April 9 , 2005 . The couple first visited the United States together as newlyweds , and Camilla was confronted by hard-core Princess Diana fans with abusive placards . Polls at the time found that between 57 % and 73 % of Brits opposed Charles ' new wife being known as queen . If you go back even further , to 1997 , the year Diana died , an Ipsos MORI poll put it at 86 % . But there 's been a change in sentiment since they married . A new poll conducted by ComRes for CNN found that only 35 % now oppose Camilla being known as queen . Nearly one in four said they liked her more now than they did 10 years ago . In an exclusive interview with CNN royal correspondent Max Foster , Charles opened up about the couple 's relationship . He met Camilla years before he wed Diana , who famously said in a 1995 BBC TV interview that `` there were three of us in this marriage , so it was a bit crowded . '' Reporter 's notebook : Interviewing the royal couple . The prince has admitted talking to his plants in past TV interviews , inviting ridicule from some quarters . But as part of his interest in sustainability , he has championed organic farming and gardening for many years , including on his large country estates . He has a fully functioning organic farm at Highgrove estate in Gloucestershire , England , and founded his own organic food brand , Duchy Originals , which now turns a healthy profit and helps fund his charitable foundation . According to his official website , he 's an advocate of traditional rural skills and enjoys hedge laying . Charles has riled some people over the years with his outspoken views on architecture , which prioritize the traditional over the modern . In 1984 , he made headlines when he described a proposed modern extension to the National Gallery in London as `` a monstrous carbuncle , '' according to news reports from the time . He 's also invited controversy by reportedly writing to ministers -- and even the Prime Minister -- on subjects close to his heart . This intervention in the public sphere has troubled those who believe the royals should not get involved in such debates and worry that , once king , Charles may not remain above politics in the way that his mother has . In a piece published by The Architectural Review in December , Charles explained his thinking on architecture , saying `` designing places according to the human scale and with Nature at the heart of the process has always been my central concern . '' The future king has often been photographed on the ski slopes of Europe and in the past has also tried his hand at water skiing , surfing and scuba diving . He was a keen polo player for more than four decades , only retiring from the sport in 2005 . This is despite breaking his arm in two places when he fell off a pony during a polo match in 1990 . He also climbed in the saddle as a jockey on a number of occasions . His website also describes him as an `` experienced watercolourist '' who likes to paint in the open air at home and on his travels .
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