Image 1 Caption: A physical map of the British Isles---or, patriotically speaking, the Hiberno-British Isles (see Wikipedia: British Isles naming dispute).

Stonehenge is in southwest England on the Salisbury Plain.

Selected locations: including cathedrals, cities, counties, geographical features, islands, landmarks, political divisions, towns, tourist sights, et cetera:

1. Derry (county): Bann (river), Coleraine, Derry (city), Fermullan (modernly Formullen).
2. Dublin: Liffey (river), St Stephen's Green, Trinity College, Dublin.
3. Galloway: maps: Galloway: schematic (1931) for The Five Red Herrings (1931), Galloway: schematic (1931) from The Five Red Herrings (1931) (best online version), Galloway: physical, etc.
4. London: House of Lords Library, Thames (river).
5. Somerset: Cadbury Castle, Church of St John the Baptist, Glastonbury, Glastonbury, Glastonbury Abbey, Glastonbury Lake Village, Glastonbury Tor, Mendip Hills, Sedgemoor, Somerset Levels, The Tribunal, Glastonbury, Wells, Somerset, Wells Cathedral, Yeovil.
6. Wiltshire: Salisbury Cathedral, Salisbury Plain, Stonehenge.
7. Yorkshire: Aysgarth, Aysgarth Falls, Coverhead (source of the River Cover), Rievaulx Abbey, York, Wensleydale.

Image 2 Caption: A physical map of Ireland.

Image 3 Caption: A physical map of Ireland.

Images:

1. Credit/Permission: Willliam R. Shepherd (1871--1934), Historical Atlas (1923,1926) / Public domain.
   Image links in order of increasing directness: (1) Perry-Castaneda Library Map Collection, (2) Perry-Castaneda Library Map Collection: Historical Maps, (3) Historical Atlas (1923,1926), William R. Shepherd (1871--1934), (4) Physical Map of the British Isles (296K) [p.49] [1926 ed.]: scroll down ∼ 20% in "(3)".
   
2. Credit/Permission: U.S. Central Intelligence Agency, 1982 / Public domain.
   Image link: Perry-Castaneda Library Map Collection: Ireland Maps.
   
3. Credit/Permission: The Ireland Story, before or circa 2015 / Permitted with credit to The Ireland Story.