Stately trees shade outdoor tables in the city's second oldest square. The surrounding architecture provides an overview of the influences—Spanish colonial, French classical, and ornate Italian masonry—that shaped the city in the 19th and 20th centuries. On Sunday from 10 to 5 the square comes alive with the Feria de San Pedro Telmo (San Pedro Telmo Fair) and its vendors and tango dancers. Shop for tango memorabilia, leather goods, antique silver, brass, jewelry, crystal, and turn-of-the-20th-century Argentine and European curios. Prices are high at stalls on the square and astronomical in the shops surrounding it, and don't expect to bargain.
Feria Must-Have: Antique (or just plain old) glass soda siphons that used to adorn every bar top in Buenos Aires. Classic colors are bottle green or turquoise; prices start at around 20 pesos.
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