The Brussels Historic District is a historic district which encompasses much of the village of Brussels, Illinois. The district includes the buildings on .7 miles (1.1 km) of Main Street and .1 miles (0.16 km) of Community Avenue, the village's two main streets. The Brussels area grew significantly in 1843 due to an influx of German immigrants, and development in the historic district began in 1847 with the construction of Wittmond's Trading Post. The village continued to develop into the 20th century while maintaining its identity as an agricultural community.