Millions of people visit Niagra Falls every year, but now one man is going to walk across it on a tight rope.

An American high wire performer was just given permission Wednesday. 

He is part of the famed "Flying Wallendas" family of circus acrobats. 

The crossing at the U.S. / Canada border will take at least 30 minutes on an 18-hundred-foot wire that's just two inches wide. 

He will have a team on standby to rescue him in case something foes wrong. 

The last person to make this risky walk was in 1896. 

The attempt will be sometime this summer.