The famous revolving beacon that once sat atop the 37-story Palmolive Building was for years a beloved Chicago landmark and a navigation aid to pilots, who reportedly could see it from 300 miles away.

Answer: The rotating beacon is on at night to help pilots find the airport. When it is on during the day, it is usually because the weather at the airport is below VFR minimums.

A rotating beacon navigation light is seen at Peter O’ Knight Airport on Friday, March 1, 2024, in Tampa. [ LUIS SANTANA | Times ] After the survey is done, the city will have to apply for a ...

The famous beacon’s lights have been replaced with specially-designed LED bulbs to provide a permanent, cost-effective and energy-efficient solution for the lighthouse. The Coast Guard lit a first of ...