Gothic architecture is tall, slender, sleek and elegant. New York-based architect Mark Foster Gage looks at the history of one of the world’s most recognizable architectural styles, and explains ...

The circular glass, called an oculus, gives visitors on the new bike and pedestrian path on the Interstate 74 bridge a view of the Mississippi River below.

A circular window, called an oculus, is built into the pedestrian path on the new Illinois-bound bridge. The path is expected to open to the public this spring.