Manaus is located in the center of the world's largest rainforest. Rubber made it the richest city in South America during the late 1800s. Rubber also helped Manaus earn its nickname, the "Paris of the Tropics". Many wealthy European families settled in Manaus and brought their love for sophisticated European art, architecture, and culture with them.

Currently its main economic engine is the Industrial Park of Manaus, a Free Economic Zone. The city has a free port and an international airport. Its manufactures include electronics, chemical products, and soap; there are distilling and ship construction industries. Manaus also exports Brazil nuts, rubber, jute and rosewood oil. It has a cathedral, opera house, zoological and botanical gardens, an ecopark and regional and native peoples museums

Manaus was one of the twelve Brazilian host cities of the 2014 World Cup, as well as one of the five subsections of the 2016 Summer Olympics.

More Info: en.wikipedia.org