Visitors to Walk Outside CN Tower's Observation Deck

A promotion for the 35th birthday of Canada's tallest free-standing structure promises breathtaking views at stomach-evacuating heights.

The CN Tower will soon allow visitors to walk around the outside of the observation deck while attached via a harness to a steel railing. The promotion is part of the tower's 35th anniversary celebrations, and will cost $175 for a 90-minute experience that includes a safety lesson and a half-hour outside the deck near the top of Canada's tallest building. Starting June 1, participants will be able to follow a guide along a path about five feet wide and nearly 1,200 feet above the ground. One supposes that vomiting over the edge onto traffic, both pedestrian and vehicular, comes at no extra charge.