Shawmut Peninsula
United States
Shawmut Peninsula is the promontory of land on which Boston, Massachusetts was built. The peninsula, originally a mere 789 acres (3.19 km2) in area, more than doubled in size due to land reclamation efforts that were a feature of the history of Boston throughout the 19th century.
Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).