Diamond Nation is a 65-acre baseball complex in Raritan Township, New Jersey, that was established in 2009.

[1] It is home to Jack Cust Baseball Academy and Jennie Finch Softball Academy making itself a premier baseball and softball tournament and training center in the country.

[2] Multiple New Jersey high school baseball teams play games at Diamond Nation throughout the spring season.

[4] In early 2014, Diamond Nation made proposals to build another complex in Fredericksburg, Virginia that would be home to Minor League Baseball team, Hagerstown Suns.

The 140,000-square-foot sports dome was built in 2003 and was the largest air structure in the United States until it collapsed during a snow storm in winter 2015.