Niagra Falls
they would be peace bridge, rainbow bridge and the water bridge ,and the suspension railroad bridge.
a bridge helps people cross the river
A rainbow. (Specifically, Bifrost, the rainbow bridge.)
By a bridge
The Charles River in Massachusetts
It crosses the Saginaw River.
London Bridge crossed over the River Thames.
To cross a river
you have to complete the third rainbow(blue) and then cross the rainbow bridge and your there!
It crosses the St Lawrence river
If its going into another country then yes you do.
The River Thames in London.