Worth reading: Denmark, the world's happiest country

For your Monday reading: interesting stories we spotted from around the blogosphere.

Six reasons to visit Denmark, the world's happiest country. [4 Hour Workweek]

EuroCheapo's upgraded hotel search engine—now with more CheapoFactor. [EuroCheapo]

Prescription sunglasses for about $40, just in time for your trip. [Kevin Kelly's Cool Tools]

Why do airfares change so much? An explanation from a former price setter at US Airways. [The Cranky Flier]

Bing, Microsoft's new search engine, has "instant answers," like cheap tickets for various destinations. [Dennis Schaal Blog]

Are you an introvert? Six tips for shy travelers. [WorldHum]

Amsterdam's Hans Brinker is the worst hotel in the world…and proud of it. [Gulliver]

The Art Institute of Chicago's recently opened Modern Wing was designed by lauded architect Renzo Piano and houses works by the likes of Pablo Picasso. [AP via Yahoo! News]

Beautiful fountains around the world—Europe's got the market cornered on this one. [Kathika]

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