AMF Bowling Centers Inc. (A Bowlmor AMF Company), Middle River

"You're up." At more than 200 AMF Bowling locations across the U.S., that message is passed between friends as they heft a ball, step to the line, and take aim. Now synonymous with bowling, AMF was founded in 1901 as American Machine and Foundry. It wasn't until 1946 that the company made a splash in bowling, when it introduced the automated pin spotter to the public. Today, AMF's nationwide network of bowling centers is a source of year-round entertainment for people of all ages. Outfitted with a classic bowling alley design, the centers also feature the latest technologies, from high-tech scoring systems to the ability to share experiences on social media. Bowlers can also refuel on a menu of American foods when they get hungry or the little heart-shaped meter above their heads begins blinking.