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Diffusion Festival

When: Saturday, Sunday and Monday

Where: Various locations

Cardiff's first international festival of photography Diffusion launched on Wednesday, and the first weekend of the month-long programme is packed full of things to see and do. There are exhibitions at the National Museum, Chapter, Royal Welsh College of Music and Drama, and the revamped Tramshed in Grangetown. You can get involved in the ffotohive project, visiting designated points around the city to take a photo and contribute to this collective artwork via Twitter, attend photography talks, a pop-up portrait studio and lots more. Visit the Diffusion Festival website for more details.

Willie Nile at Clwb Ifor Bach

When: Saturday May 4, 8pm

Where: Clwb Ifor Bach

The New York Times called him "one of the most gifted singer-songwriters to emerge from the New York scene in years", while his album “Streets Of New York” was hailed as “a platter for the ages” by UNCUT magazine. And American rocker Willie Nile will be in Cardiff on Saturday night thanks to the dedication of two Welsh fans , who are shelling out £1,500 to bring him to the Welsh capital. Gareth and Kate Coombes have followed Nile, who has opened for The Who and performed with Bruce Springsteen, all over the UK and used their savings to put on Saturday night's gig at Clwb Ifor Bach. Catch him, and them, there from 8pm.

Cost: £9

May Day Festival!

When: Saturday May 4, from 4pm

Where: Buffalo Bar, Cardiff

It's the May Day Bank Holiday weekend, so Buffalo Bar are quite rightly throwing a party. Or a barbecue and ball to be exact. There will be a huge garden barbecue from 4pm-9pm, following by DJs across two floors until 4am. If you're worried about feeling a little worse for wear on Sunday, remember you've got two days to recover.

Cost: Free for 11pm.

Made In Spring

When: Sunday May 5, from 10am

Where: Angus Street, Roath

The people behind annual arts weekend Made In Roath, held in October, are bringing their day-long spring festival back for a second year, with Made In Spring taking over Angus Street in Roath from 10am on Sunday. The seasonally-inspired street party will include stalls, workshops, live music and arty activities from creative writing to kaleidoscope making. For a full list of all the exhibitions and activities on the day visit the Made In Roath website .

Cost: Free

Cardiff City parade

When: Sunday May 5, from 5.45pm

Where: Begins at Cardiff Castle, and ends Cardiff Bay

Sunday is bound to be a special day for Cardiff, with an open top bus parade to celebrate the Bluebirds promotion to the Premier League. Full details of the parade route can be found here , but the basics you need to know are that it begins at Cardiff Castle at 5.45pm, before making its way down St Mary Street, through Callaghan Square, down Lloyd George Avenue and finishing with a presentation and fireworks display at Roald Dahl Plass in the Bay from 8.30pm. The club has called for as many people as possible to line the streets to mark the day, so why not join them? After all, you've got all of Monday to recover.

Cost: Free