CHICAGO (CBS) — Anticipation is building for the walk over the Chicago River by daredevil Nik Wallenda.

The Wallenda walk starts Sunday evening at 6 p.m. when he will walk on a wire from one of the Marina City towers to the Leo Burnett building on the other side of the river.

Then, he will return to Marina City and walk between the two towers blindfolded.

The live event is a change for plenty of businesses along the river to cash in by catering to onlookers seeking the best view.

Derrick Blakely has more: