Manaus, Brazil: Gateway To Tours Of The Amazon

This 2013 photo provided by Jeremy Hainsworth shows Hainsworth on the right and a guide on the left holding a boa constrictor in the Amazon jungle in Brazil, about 100 miles from Manaus. Amazon guides will seek snakes and other creatures in the jungle to show to visitors on tours. Manaus, a host city for some of the top tournaments at this summers World Cup games, is also a gateway for Amazon tourism, with many outfitters and tour companies using it as a base for organizing river and jungle trips. (AP Photo/Jeremy Hainsworth)

This 2013 photo shows Amazon jungle guide Shane Zammette surveying the shorelines for caimans and the treetops for sloths from a motorized canoe on the Amazon River about 100 miles from Manaus, Brazil. Manaus is a host city for some of the top tournaments at this summers World Cup games and its also a gateway for Amazon tourism, with many outfitters and tour companies using it as a base for organizing river and jungle trips. (AP Photo/Jeremy Hainsworth)

This 2013 photo shows Gero Mesquita's Ararinha Jungle Hotel lodge in the Amazon in Brazil, about 100 miles from the city of Manaus. Guests can choose from individual huts or beds or hammocks in a communal sleeping area above the lodge dining room. Manaus is both a host city for some of the top tournaments at this summers World Cup games as well as a gateway for Amazon tourism, with many outfitters and tour companies using it as a base for organizing river and jungle trips. (AP Photo/Jeremy Hainsworth)

This 2013 photo shows the maze of waterways, large tracts of open and forested land and vast skies making up the immensity of the Amazon in Brazil, about 100 miles from the city of Manaus. Manaus, a host city for some of the top tournaments at this summers World Cup games, is also a gateway for Amazon tourism, with many outfitters and tour companies using it as a base for organizing river and jungle trips. (AP Photo/Jeremy Hainsworth)

This 2013 photo shows a visitor on a tour of the Amazon in Brazil displaying her first piranha catch as guide Shane Zammette, who provided beef for bait, looks on. The tour takes place about 100 miles from Manaus, Brazil, which is both a host city for some of the top tournaments at this summers World Cup games as well as a gateway for Amazon tourism, with many outfitters and tour companies using it as a base for organizing river and jungle trips. (AP Photo/Jeremy Hainsworth)