Today, winners were announced in the World Architecture Festival, a sprawling convocation that also serves as the most varied architectural competition around. Here's a collection of some of the most intriguing award winners.

Batlle and Roig Architects won the display category, for the forest of macaw cages they designed for the Barcelona Zoo.

Mapungubwe Interpretation Centre, South Africa by Peter Rich Architects, winner of the Culture category. The thatched roofing and the undulating roof lines were meant to echo the landscape, and recall vernacular building techniques.

The Holiday winner also evokes very-old school building traditions: Murman Arkitekter's Holiday Restaurant Tusen in Ramundberget, Sweden.

From a distance, you might mistake it for yurt built by the Sami.

The House winner is a tad more modern: The Klein Bottle House in Rye, Australia, by McBride Charles Ryan. It was meant to turn in on itself, like its mathematical namesake, the Klein Bottle (which is the 3-D equivalent of a Mobius strip).

Another view of the house--which changes radically, depending on viewpoint.

In the Learning category: The Pearl Academy of Fashion in Jaipur, India, by Morphogenesis.

Behnisch Architekten's Unileverhaus in Hamburg, Germany took the Office category, with a design that's both dramatic, free-flowing, and green.

The office at night.

A detail of its multifaceted facade.

The one stateside winner: The TKTS Booth by Perkins Eastman. They won the New and Old category for a scheme that reorganized Father Duffy Square (in the shadow of Times Square), while make the TKTS booth itself into a vibrant public space.

A mobile performance venue by Various Architects took the experimental category. It was designed to be an exhibition space that can be disassembled and plopped down anywhere you like...

...even a desert.