Why is the harbor of Rio de Janeiro one of the 7 wonders of the world?

What year was the grand slam golf5 iron made by Hillerich and Bradsby made? What do the hairstyles at Bibbidi Bobbidi Boutique look like? What happens to ocean currents when they hit land mass? How much does a sea wall cost to maintain? How many types of coral are in the New Caledonia Barrier Reef? What country is the man made water way? What is the greatest the grand canyon depth width or length? Can turtles eat peaches? What interstates run through the Blue Ridge Mountains? Why is the boiling point of water on mount Everest low? Where are the best tickling spots? Where is Lake Kattura? When did Middle Francia end? Was the crown to the Statue of Liberty also made in France? What land form plays a role in forming the climates in the region west of the Mississippi River? What kind of person you refuse to work? How popular is Paris? What towns does the river Rhine flow through? What are the reason for tourism planning? What occurs when water rises over the banks or sides of a river?

Why is the harbor of Rio de Janeiro one of the 7 wonders of the world?