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The Santiago airport is an efficient, well laid-out facility with everything you need.  It features many good restaurants, a wide array of services and plenty of stores selling both local and international products.  There is even a large duty-free shop located between passport control and luggage retrieval, so you can purchase tax-exempt goods after getting off your flight.

But in typical Chilean fashion, not all is efficiency and commerce.  The airport is full of whimsical touches, such as this pop-art sculpture of suitcases reaching for the sky.