To celebrate "National Fun at Work Day" on 29 January, we have picked 10 of the coolest offices you have ever seen!

  1. Google London
Google is the trendiest place to work, so it's only fitting that it has the coolest office. Step inside a London landscape with a mini St James's Park complete with boating lake - and yes, you can row your boat on it. You can even hop on an old Routemaster bus to hold a meeting or have a chat.To add to its coolness, it's bagged the bath tub used by Douglas Adams of The Hitchhiker's Guide to the Galaxy fame. Designed by Peldon Rose with Pitch Studios, Google's London HQ won the UK Property Award 2011’s Best Office Interior London prize.

Microsoft Office

By Ben Murray, Head of Marketing, Peldon Rose