It’s Wednesday and time for another travel quiz.

Where in the world is this fab Art Deco building?

Hint: If you’re a mystery geek, you might recognise this as the residence of a famous detective.

Think you know the secret location? A winner will be selected among those who give the correct answer. They will be featured here on “Where in the world?” and on Sophie’s World Facebook fan page with their name, blog, SoMe channel of choice and a short bio.

Moderation is switched on, so don’t worry about giving away the answer if you know it. All comments will be published simultaneously. So go on, have a guess!

All is revealed

Update 17 February 2011
As many of you guessed, or perhaps knew, this is Poirot’s HQ in London. It’s called Whitehaven Mansions in the series, and Florin Court in the real world. My daughter is a Poirot fan and dragged us along to see it. (Rent seems reasonable, by the way).

Luckily, it turned out to be a short walk from all sorts of interesting landmarks: St Paul’s, the Gherkin and the City of London. And it’s just a minute or two down the road from historically interesting Smithfield, sight of numerous public executions. And a 12th century meat market (still in operation).

Eric of Trans-Americas Journeys, Jim of Around the World in Eighty Years, Dick Jordan of Tales Told from the Road and Mette of Italian Notes. You’re all winners! Honourable mention to Ana of Ana’s Travels.

Headquarters of Hercule Poirot in London