The SS United States (S01E06)

A decrepit historic ship lies rusting in the Delaware River, prompting experts to delve into its past, uncovering its identity as a passenger liner that also served as a U.S. warship due to its unique design. Subsequent segments of the episode explore the Idlewild vacation resort in Michigan, the Bolinas Transmitting Station in California, and the Cahokia Mounds in Illinois, highlighting their fascinating histories and significance.