Local workers and tourists walking through Southwark Cathedral's churchyard on Wednesday lunchtime were invited to share their secrets of mental wellbeing.
To mark World Mental Health Day the London Bridge-based social enterprise Mindapples brought its 'Mindapples tree' to the cathedral churchyard.
The eye-catching structure that asks invites passers-by to share the five things they do that are good for their minds.
"The point of Mindapples is to show people how much influence they have over the health of their minds, and get people talking positively in local communities about how to take better care of themselves," says founder Andy Gibson.
"We've been in all kinds of places since we started in 2008, from music festivals to corporate boardrooms, and to have the Mindapples Tree in such a prime spot as Southwark Cathedral gives us a wonderful opportunity to engage more people in our simple campaign."
The Very Revd Andrew Nunn, Dean of Southwark, added: "Poor mental health can affect anyone and everyone at any point in their lives.
"This is why we're very pleased at Southwark Cathedral to support the Mindapples campaign on World Mental Health Day.
"This tree is a colourful reminder that we all need to do things that are good for our minds and can help us talk positively about mental health and be an inspiration for people to take care of themselves in these challenging times."
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