> The following overseas territories are technically part the EU.

However, in

> the case of the Aaland Islands, Guernsey, Jersey and the Canary

Islands,

> only certain EU legislation applies.
>
> Finland - Aaland Islands
> France - Guadeloupe, French Guiana, Martinique, Reunion
> Portugal - Azores, Madeira (although neither are separate overseas

territories)

> Spain - Ceuta, Melilla, Canary Islands (although none of these are
> separate overseas territories)
> United Kingdom - Gibraltar (although not recognised by Spain),

Guernsey,

> Jersey
>
> All other overseas territories of EU member states are *not* part

of the EU.

OK, therefore, besides discussed Northernmost EU point, others are
not so clear.

Union with the Dependencies
N: Finland
S: Reunion (or Europa Island, if it is EU)
W: Saint Martin
E: Reunion

Mainland Union

N: Finland
S: Hierro, Canary Islands (if Canaries considered EU) or Ilhas
Desertas, Madeira or Crete or Continental S point: Algeciras, Spain
W: Azores. or Rockall? Cotinental: W point in Ireland, or to be
really continental, W point in Portugal.
E: FIRU or after expansion: wherever in Cyprus.

hm