The buildings and architecture of Allentown, Pennsylvania reflect the city's history from its founding in 1762 through to the present.
Allentown is characterized by historic homes, churches, commercial structures, and century-old industrial buildings, some of which played a role in the American Revolution of the 18th century, or were centerpieces in the Industrial Revolution of the late 18th and early 19th centuries. Many of the city's homes and building structures rank among the oldest in the United States of America.