All eyes are on Britain as the wedding of Prince Harry and Meghan Markle draws closer. With May 19 being less than a month away, the palace has divulged some details about the upcoming nuptials, and here's what is known so far:

1.  The couple will wed in Windsor Castle, a royal residence west of London that dates back more than 900 years.

2.  The ceremony will take place at midday (1100 GMT) in St George's Chapel, the final resting place of 11 monarchs including Henry VIII and Charles I, which is usually open to the public

3. The wedding cake is a lemon elderflower cake created by pastry chef Claire Ptak, an American based in London, which will be covered with buttercream and decorated with fresh flowers.

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4. Floral designer Philippa Craddock will dress St George's Chapel and St George's Hall, incorporating plants from the wildflower meadows of London and foliage from Windsor Great Park. Flowers that will be featured include white garden roses, peonies and foxgloves.

5. The official wedding photographer is Alexi Lubomirski, who photographed the pair for their engagement. 

6. Rather than gifts, the couple have asked for donations to seven charities instead. They are the Children's HIV Association, homeless charity Crisis, the Myna Mahila Foundation, Scotty's Little Soldiers, a charity for bereaved Armed Forces children, StreetGames, Surfers Against Sewage and The Wilderness Foundation UK. According to Kensington Palace, the couple do not currently have any formal relationships with the chosen charities.

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7. Britain's Queen Elizabeth II had to consent to the wedding, as under British law the monarch must approve the marriage of the six people next in line to the throne in order for them to retain their place.

Harry is currently fifth in line after his father Prince Charles, elder brother Prince William and his sibling's two children, but will be bumped down to sixth place after William's third child is born as expected later this month.

8. About 600 people have been invited to attend the wedding service and the lunchtime reception at St George's Hall within Windsor Castle. Of these, around 200 guests will go on to an evening reception at Frogmore House, a royal residence south of the castle.

A further 2,640 people will be welcomed into the grounds of Windsor Castle, including charity representatives and military veterans, to watch the arrival of the bride and groom and their carriage procession following the ceremony.

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9. US President Donald Trump and British Prime Minister Theresa May have not been invited. Kensington Palace -- the official residence of Harry and Markle -- said "an official list of political leaders" has been deemed unnecessary for the nuptials.

10. Police are preparing for 100,000 people to visit Windsor for the occasion, with analysts expecting the royal wedding to boost tourism to Britain. Visitors to the town can expect to be searched by police, who will install road barriers as part of a massive security operation.

Food stalls, live screens and entertainment will be set up in Windsor, extra rail services will be laid on and 6,000 more car parking spaces opened up. Bunting and ceremonial banners will be hung around the town.