About 5 minutes, see the related link below.
Buckingham Palace is owned by the "Queen in right of the Crown". Meaning that she doesn't own it as a private person but rather as the personification of the crown. As long as the monarchy remains, the palace will be owned by the sovereign, but he or she doesn't have the right to sell it. The Duke of Westminster owns a lot of land in London but Buckingham Palace is not one of them. Technically the Queen owns more of London than any one, through the Crown Estates, Royal Parks, Royal Palaces and the Duchy of Lancaster, but once again she doesn't have the right to sell any of these as a private individual.
About 2 hours
1-2 days
From Heathrow Airport take the Pidadilly line or better know as the London Tube to Green Park. It will take you about 45 minutes to get there depending on traffic. Once you have reached Green Park it is only a fifteen minute walk to the Buckingham Palace.
Probably 1-2 hours
The bells were to play a peal following the wedding, by definition a peal is a series of at least 5000 changes (or different permutations of the order of bells played,) which typically takes about 3 hours. Westminster Abbey has a 10 bell set, it would have taken far too long to play a full (or long length) peal which would have been comprised of 3,628,800 changes. The last full peal played on 8 bells took 17 hours for 40320 changes.
They aren't necessarily. The Abbey's own website states: 'Westminster Abbey has hosted only sixteen royal weddings in its long history (of reigning monarchs or those who, had it been established at the time, were entitled to the style "Royal Highness"). History records a number of weddings taking place "at Westminster" but his did not necessarily mean at the Abbey. Another probable venue was St Stephen's chapel in the Palace of Westminster. Whitehall Palace and Greenwich Palace were two of the locations used by Henry VIII. St James's Palace and St George's chapel Windsor were also popular with later monarchs and their children. Princess Patricia, a grand-daughter of Queen Victoria, began the modern trend for royal marriages at Westminster Abbey in 1919 and Princess Mary and Elizabeth Bowes Lyon, who married the future George VI, chose to follow her example.' However, in more recent history: Several Royal Weddings have been held elsewhere. The Duke and Duchess of Kent were married in York Minster; Prince Charles and Princess Diana were married in St. Paul's Cathedral; the Queen's youngest son Prince Edward and his wife Sophie were married in St. George's Chapel Windsor; and for his second wedding to Camilla, Prince Charles married in the Guildhall, Windsor, followed by a Service of Blessing in St. George's Chapel. Of the Queen's grandchildren, only Prince William was married in Westminster Abbey. Peter Phillips and his wife Autumn were married in St. George's Chapel, Windsor, and his sister, Zara Phillips, married Mike Tindall in the Cannongate Kirk, Edinburgh.
The palace is guarded by guards 24*7*365. However, an individual guardsman/soldier will not be on guard for 24 hours at a time.
Since the question is ungrammatical, it is open to doubt as to whether the questioner is asking if the Queen Mother was present at her own Coronation (as Queen consort) or her daughter's. I am assuming the latter. At the coronation of Queen Elizabeth II, her mother watched from the balcony in Westminster Abbey, along with Prince Charles and Princess Margaret. Princess Anne was deemed too young to attend such a long ceremony, but appeared with her parents on the balcony of Buckingham Palace to acknowledge the acclamations of the vast crowd.
It is STILL standing, it was first erected (completed) in 1833 and was the front gate to Buckingham Palace. It was moved to its current location in 1851.
Princess Anne and Mark Philips were married in Westminster Abbey (The Abbey Church of St. Peter, Westminster) on 14th November 1973
The name of the British Parliament house is the Palace of Westminster. The Palace of Westminster is located on the north bank of the River Thames in the City of Westminster in central London. It is the home of the House of Commons and the House of Lords the two houses of the Parliament of the United Kingdom. The Palace of Westminster is a Grade I listed building and is considered one of the most important structures in the world. The Palace of Westminster is made up of several different parts: The Palace of Westminster itself where the House of Commons and the House of Lords meet and debate. The Clock Tower commonly known as Big Ben which is located at the north end of the Palace. The Victoria Tower at the south end of the Palace. The Royal Gallery where the monarch sits when attending official events. The House of Commons Library and House of Lords Library where members of Parliament can access information and research. The Central Lobby the entrance hall to the House of Commons and the House of Lords.The Palace of Westminster is a symbol of the British Parliament and democracy and it is visited by millions of people every year. It is a UNESCO World Heritage Site and a reminder of Britains long history of parliamentary democracy.