The Puerta de Europa (Gate of Europe) in Madrid consists of two $26$-floor prisms inclined $15^\circ$, a nice of a spatial shear transformation:

^{(Image from [archiseek.com](http://archiseek.com/2009/1996-puerta-de-europa-madrid/).)}

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Designed by architects Senteri Cardillo, Philip Johnson and John Burgee.

The Puerta de Europa (Gate of Europe) in Madrid consists of two $26$-floor prisms inclined $15^\circ$, a nice example of a spatial shear transformation:

^{(Image from [archiseek.com](http://archiseek.com/2009/1996-puerta-de-europa-madrid/).)}

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Designed by architects Senteri Cardillo, Philip Johnson and John Burgee.

The Puerta de Europa (Gate of Europe) in Madrid consists of two $26$-floor prisms inclined $15^\circ$:

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[![PuertaEuropa][1]][1]
^{(Image from [archiseek.com](http://archiseek.com/2009/1996-puerta-de-europa-madrid/).)}

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Designed by architects Philip Johnson and John Burgee.

The Puerta de Europa (Gate of Europe) in Madrid consists of two $26$-floor prisms inclined $15^\circ$, a nice of a spatial shear transformation:

^{(Image from [archiseek.com](http://archiseek.com/2009/1996-puerta-de-europa-madrid/).)}

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Designed by architects Senteri Cardillo, Philip Johnson and John Burgee.