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Pucallpa, Peru, Main Square,
Plaza de Armas

Pucallpa is a city in eastern Peru located on the banks of the Ucayali River, a major tributary of the Amazon River. It is the capital of the Ucayali region, the Coronel Portillo Province and the Calleria District.

Pucallpa was founded in the 1840s by Franciscan missionaries who settled several families of the Shipibo-Conibo ethnic group. For several decades it remained a small settlement as it was isolated from the rest of the country by the Amazon Rainforest and the Andes mountain range. Source:
Wikipedia: Juliaca.

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Golden rectangle**

A golden rectangle
is a rectangle whose side lengths are in the golden ratio,
one-to-phi, that is, approximately 1:1.618. A distinctive
feature of this shape is that when a square section is
removed, the remainder is another golden rectangle, that is,
with the same proportions as the first. Square removal can
be repeated infinitely, which leads to an approximation of
the golden or Fibonacci spiral.

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