The @wherenext platform enables users to discover venues that are trending across social networks, using an algorithm that analyses data from media including Foursquare, Twitter and Instagram.
After typing "@wherenext" and their location, users are presented with a number of options and a link to a mobile site carrying images and reviews.
Here's a video showing people using the app have lots of fun.
Heineken's 'Open Your City' kicked off earlier this month with a six-month partnership with Metro entitled 'London Unlocked'.
Client: Paul Smailes, global head of digital, Heineken
Agency: R/GA London
Creatives: George Prest, James Temple, Chris Williams