English Wikipedia has a category on:
Wikipedia
Commons:Category
Commons:Category
Wikimedia Commons has more media related to:
Newest and oldest pages 
Newest pages ordered by last category link update:
  1. Luichew
  2. Porkkala
  3. Yucatán
  4. Bicol Peninsula
  5. Korean Peninsula
  6. Balkan Peninsula
  7. Asia Minor
  8. Italian Peninsula
  9. Cape Cod
  10. Varanger Peninsula
Oldest pages ordered by last edit:
  1. Korea
  2. Nova Scotia
  3. Scandinavia
  4. Brittany
  5. Florida
  6. Apulia
  7. Peloponnese
  8. Calabria
  9. Yucatán
  10. Labrador

English names of peninsulas.

NOTE: This is a name category. It should contain names of specific peninsulas, not merely terms related to peninsulas, and should also not contain general terms for types of peninsulas.