Crespi d'Adda is a historic workers' village located in the Lombardy region of northern Italy. It was founded in the late 19th century by the Crespi family, who owned a textile manufacturing company. The village was built to provide housing and amenities for the workers and their families.

The village is characterized by its uniformity and organization, with rows of red brick houses built around a central square. The architecture of the village is a mix of different styles, including Art Nouveau and Neoclassical. Many of the buildings were designed by prominent architects of the time.

Crespi d'Adda was recognized as a UNESCO World Heritage Site in 1995 for its unique and well-preserved example of a 19th-century company town. The village is also notable for its social and cultural amenities, including a school, church, theater, sports center, and library.

Today, Crespi d'Adda is still inhabited and remains an important example of social and urban planning. It is a popular destination for tourists interested in history and architecture, and is considered one of the most interesting and well-preserved examples of a company town in Europe.