To mark 20 years of Front Row Kirsty Lang and John Wilson host a celebratory extended edition live from the Radio Theatre at Broadcasting House in London.

Liz Carr, Bob Geldof, Lionel Shriver and Testament make their case for what they think is the most significant art work of the last 20 years.

Neil MacGregor, the former director of the British Museum and familiar voice to Radio 4, considers cultural developments and diplomacy since 1998.

There's a live performance from singer-songwriter Rae Morris. She'll join Caleb Femi, the Young People's Laureate for London, and Liv Little, founder and editor-in-chief of gal-dem - a magazine for young women of colour - to consider the scene for young emerging artists and to look ahead to what the next 20 years might bring.

Kate Fox, our poet-in-residence for the day, writes a rapid-response poem.

And Mary Beard pops in to tell us about the new series of Front Row Late which starts later tonight on BBC2.

Presenters: Kirsty Lang and John Wilson