Buckingham Palace

At Buckingham Palace, Queen Elizabeth II will host a lunchtime reception for about 600 of the 1,900 wedding guests

The Daily Mail reports 19 state rooms will be open and guests will be allowed to "wander through areas normally reserved for heads of state and other dignitaries in the palace's west wing."

Photo: Members of the Queen's Guard perform the Changing of the Guard ceremony at Buckingham Palace on April 8, 2011, in London.

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A general view of the State Dining Room in Buckingham Palace, which will be used during the wedding reception of Prince William and Kate Middleton.

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A general view of the White Drawing Room, which will be used during the wedding reception of Prince William and Kate Middleton, at Buckingham Palace in London, March 25, 2011.

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A painting of Queen Alexandra, wife of Edward VII, by Francois Flameng, in the White Drawing Room.

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The White Drawing Room.

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This March 25, 2011, photo shows the ceiling and chandeliers of the Blue Drawing Room at Buckingham Palace in London, which will be used for the wedding reception of Prince William and Kate Middleton.

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Royal footmen prepare a drinks table in the Blue Drawing Room, Buckingham Palace, March 25, 2011, in London.

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The Picture Gallery will be one of the rooms used during the wedding reception of Prince William and Kate Middleton.

Photo: Jennifer Scott, assistant curator of paintings, sits underneath Peter Paul Rubens' "Winter," bottom center, in the Picture Gallery at Buckingham Palace, London.

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The Picture Gallery at Buckingham Palace.

Photo: Assistant curator of paintings Jennifer Scott looks at her favorite painting.

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Edward Griffiths, Deputy Master of the Household, walks through the Picture Gallery at Buckingham Palace, which will be used during the wedding reception of Prince William and Kate Middleton.

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A Rubens self portrait from 1623 in the Picture Gallery at Buckingham Palace.

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A steward walks through the Music Room, which will be used during the wedding reception of Prince William and Kate Middleton at Buckingham Palace.

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Buckingham Palace, London, Nov. 17, 2010, the day after Prince William's engagement to Kate Middleton was announced.

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Cars pass Buckingham Palace at the end of The Mall shortly after the announced engagement of Prince William and Kate Middleton on Nov. 16, 2010, in London.

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Flags line The Mall leading to Buckingham Palace on April 15, 2011, in London.

The Mall makes up part of the route that Prince William and Kate Middleton will take when they marry on April 29.