Porteños love to brag that Buenos Aires has the world's widest avenue (Avenida 9 de Julio), its best steak, and its most beautiful women. The place to decide whether they're right is the city's heart; known simply as "El Centro," it contains the oldest and newest districts as well as many other superlatives. Cross Santiago the sleek and curvaceous Puente de la Mujer (Bridge of the Woman) and you’re in the upscale waterfront neighborhood of Puerto Madero.
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