Which four U.S. cities received special focus under the Semiquincentennial legislation?

The four cities receiving special focus under the Semiquincentennial legislation were Boston, Philadelphia, Charleston, and New York.

The law identified these places as leading cities because of their direct connections to the American Revolution and the early history of independence. Boston was a major center of colonial resistance, Philadelphia hosted the Continental Congress, Charleston was a key Southern revolutionary city, and New York played a major strategic role during the war.

The legislation directed anniversary organizers to hold activities in locations of historical significance. It therefore treated the commemoration as a distributed national story rather than an event limited to one capital or one birthplace.

Charleston here means Charleston, South Carolina, not Charleston, West Virginia. New York refers to the historically significant New York area and city, while Philadelphia is especially associated with the Declaration and Constitution. These distinctions help explain why the list differs from a simple ranking of modern American population centers.