Opened in 2000 at the dawn of a new millennium, Tate Modern is London's flagship contemporary art museum. Housed in the colossal former Bankside Power Station opposite St Paul's Cathedral, the gallery is one of the major landmarks on the Thames skyline.

The permanent collection is spread over five floors, each arranged thematically rather than chronologically. This part of Tate Modern is free to visit and includes major works by the likes of Warhol, Rothko, Picasso, Lichtenstein, Martin Creed, Sol LeWitt, and Anish Kapoor.

Tate Modern also hosts high-profile temporary exhibitions, which you have to pay to see. But these are generally so major – think Gilbert & George, Dalí, Kandisnsky – that the entry fee feels like a bargain.

One of the things that sets Tate Modern apart from its counterparts across the world is the vast Turbine Hall. This space originally housed the old electricity generators but now plays host to a programme of site-specific installations, most notably Carsten Holler's much-publicised slides and Doris Salcedo's Shibboleth, a massive crack running down the centre of the hall.

Tate Modern is one of Spoonfed's Best Galleries in London.

Click here to see what's on over at Tate Britain.