Bermuda is an archipelago designated as a British Overseas Territory in the Atlantic Ocean. It is the location that Peter Finch compares the weather of the Western Peninsula of Britain to when describing Wales. 

bridgetown in 1887

bridgetown now

Among the many locations featured in Real Wales, Peter Finch mentions Trefdraeth as part of "Y Fro Efallai" (Welsh for "the vale maybe" - where he claims reality and fantasy mix in paragraph six.

Among the many locations featured in Real Wales, Peter Finch mentions Trefdraeth as part of "Y Fro Efallai" (Welsh for "the vale maybe" - where he claims reality and fantasy mix in paragraph six.

Among the many locations featured in Real Wales, Peter Finch mentions Trefdraeth as part of "Y Fro Efallai" (Welsh for "the vale maybe" - where he claims reality and fantasy mix in paragraph six.

see images here and here.

In To His Love, the river Severn is the idyllic river where he used to be "under the blue" with his love, and is no longer. 

See a picture here or here.

William Wordsworth writes about Tintern Abbey in his poem " A Few Lines Written Above Tintern Abbey" where he sits and wishes to be even more immersed in nature and longs for a life outside the city and misses when he "bounded over the mountains" (Wordsworth). It was made famous by this poem.