Seton Hill Historic District is a historic district in Baltimore, Maryland. It was listed on the National Register of Historic Places in 1975.

St. Mary's Seminary Chapel, located at 600 North Paca Street in the Seton Hill neighborhood of Baltimore, Maryland, is the oldest Neo-Gothic style church in the United States. It was built from 1806 through 1808 by French architect J. Maximilian M. Godefroy for the French Sulpician priests of St. Mary's Seminary. Godefroy claimed that his design was the first Gothic building in America.