A memorial garden and condolence book have been opened to remember victims of the London bomb attacks.
It is hoped the garden will provide a quiet place for mourners
Mayor of London Ken Livingstone was the first to sign the book at City Hall, writing: "The city will endure."
Later a memorial garden was opened on Victoria Embankment Gardens - a flower garden is also to be created near one of the bomb sites in Russell Square.
A vigil in Trafalgar Square is being held on Thursday and a fund for victims and families has been set up.
Leaders from different faiths were at the ceremony in the garden
At the opening of the garden on Monday, Dignitaries and Christian, Jewish, Muslim, Hindu and Sikh leaders were among those laying wreaths.
Westminster City Council leader Simon Milton said: "We knew that tributes would spring up in all sorts of places. People have a right to lay their tributes where they want.
"But we wanted there to be a place in a beautiful spot where people will have time to contemplate, not just outside a busy station, and to sign a book of condolence and have a space for peaceful, quiet contemplation."
Among those at the City Hall ceremony were Culture Secretary Tessa Jowell, the minister dealing with the aftermath of the attacks, and Metropolitan police chief Sir Ian Blair.
Ms Jowell wrote: "The strength of London and her people is in diversity and tolerance. Our deepest sympathy is with the grieving families."
The leader of London's successful Olympic bid, Lord Coe, also signed the book of condolence, before laying flowers in the garden in a quiet ceremony at Victoria Embankment Gardens.
Westminster City Council said the garden is one of its prettiest and includes an historic Indian bean tree planted by the Queen in 1953 to mark her accession to the throne.
Also laying wreaths were the Anglican Bishop of Stepney, the chief executive of the Board of Deputies of British Jews, the secretary general of the Muslim Council of Britain, the secretary-general of the Hindu Forum of Britain, and the general-secretary of the Sikh Missionary Society.
The garden will remain as a memorial for now and people are invited to sign the book of condolence at City Hall.
'Bombers haven't won'
It is anticipated that a permanent memorial will eventually be established in London.
Among those arriving to sign the book on Monday was David Warren, 49, from Stoke Newington, north London.
He said: "I was near Liverpool Street when the bomb went off. I am still living, unfortunately [others] are not.
"We have got to show all terrorists: 'You haven't won. You have put fear into people, but you haven't won'."
The London Bombings Relief Charitable Fund has been set up by the mayor in association with the British Red Cross to raise money to help victims and families cope with sickness, disability and other projects.
The British Red Cross has donated £50,000. To contact the fund call 08705 125 125.