Climate activists gathered to mark the end of protests that caused 11 days of disruption across London.
More than 1,100 people have been arrested since campaigners from Extinction Rebellion first blocked traffic in the capital on 15 April.
On the final day of action, protesters blocked roads, climbed on a train and glued themselves together in London’s financial district.
Hundreds of people met in Hyde Park for a “closing ceremony”.
Campaigners sat on the grass next to Speaker’s Corner – widely considered London’s home of free speech – singing and listening to musicians.
Transport for London said all roads are open around Marble Arch.
Skeena Rathor, of Extinction Rebellion, welcomed the “rebels” to the ceremony and described the crowd as “beautiful beings”, adding: “This is our pause ceremony.
“Welcome to the beginning of our pause.”
She invited the crowd to “begin a process of reflection”, adding: “Thank you for what you have done this week. It is enormous. It is beyond words.”
The crowd cheered and clapped when a speaker said “the police were amazing” during the days of blockades.
“We will leave the physical locations but a space for truth-telling has been opened up in the world,” event organisers said on their Facebook page.
“We would like to thank Londoners for opening their hearts and demonstrating their willingness to act on that truth.
“We know we have disrupted your lives. We do not do this lightly. We only do this because this is an emergency.”
Extinction Rebellion is urging the government to “tell the truth” about the scale of the climate crisis. It wants the UK to reduce carbon emissions to net zero by 2025 and a Citizens’ Assembly set up to oversee the changes needed to achieve this.
On Thursday, 26 people were arrested on suspicion of aggravated trespass outside the Stock Exchange and on Fleet Street, bringing the total number of arrests up to 1,130 since the protests began on 15 April, the Met Police said.
Four people stood on top of a Docklands Light Railway (DLR) train while another glued herself to a train.
Five people were arrested on suspicion of obstructing the railway, the British Transport Police said.
Meanwhile, Dame Emma Thompson, who joined the activists on Saturday, has defended flying from Los Angeles to London to take part.
The actress said it was “very difficult to do my job without occasionally flying” but she was “in the very fortunate position of being able to offset my carbon footprint”.
More than 10,000 police officers have been deployed during the action.
Mayor of London Sadiq Khan said the protests had been a “huge challenge for our over-stretched and under-resourced Metropolitan Police”.
The Met said on Wednesday it had imposed new conditions under the Public Order Act on the protest area in Marble Arch, making it a criminal offence to protest outside a designated area or incite others to protest outside of it.
The conditions will remain in force until Saturday.
US President Donald Trump will make a state visit to the UK in early June, Buckingham Palace is expected to announce later.
The president was promised the visit by Prime Minister Theresa May after he was elected in 2016 – but no date was set.
Downing Street did not comment on the matter when contacted by the BBC.
President Trump and the First Lady, Melania, met the Queen at Windsor Castle when they came to the UK in July 2018 for a two-day working visit.
During the trip, the president also held talks with met Mrs May at Chequers before heading to Scotland, where he owns the Turnberry golf course.
The president’s last visit was marked by demonstrations around the UK.
In London, thousands of people took to the streets to voice their concerns.
And in Scotland, people showed their displeasure, both in Edinburgh and at Turnberry.
The National Police Chiefs’ Council estimated that the police operation for the president’s 2018 visit cost nearly £18m.
It said 10,000 officers from across the country were needed to cover the occasion.
The campaigners behind the 2018 protests – the Stop Trump coalition and Stand Up To Trump – have vowed to mobilise “huge numbers” once again in response to the visit.
What is a state visit?
A state visit is a formal visit by a head of state and is normally at the invitation of the Queen, who acts on advice from the government.
State visits are grand occasions, but they are not just ceremonial affairs. They have political purpose and are used by the government of the day to further what it sees as Britain’s national interests.
Once the location and dates are confirmed, the government, the visiting government and the royal household will agree on a detailed schedule.
So what is involved?
The Queen acts as the official host for the duration of the trip, and visitors usually stay at either Buckingham Palace or Windsor Castle.
There is usually a state banquet, and a visit to – and speeches at – the Houses of Parliament may be included. The Speaker of the House of Commons is one of three “key holders” to Westminster Hall, and as such, effectively holds a veto over who addresses Parliament.
The Queen usually receives one or two heads of state a year. She has hosted 109 state visits since becoming monarch in 1952.
The official website of the Queen and the Royal Family has a full list of all state visits since then, including details of how the ceremonies unfold.