Depart Wolverhampton early to reach St Pancras International for Eurostar connections; allow time to transfer between Euston and St Pancras (approx 30–60 mins).
Long high-speed TGV across France down to the Basque border; scenic but full day of travel so relax onboard. Check specific TGV schedules — typical duration is long so expect to arrive late.
Historic pilgrimage cathedral with spectacular interior; the cathedral generally opens early (often ~7:00am) but cloister/museum areas open later — check times and book botafumeiro mass if desired.
Guided boat trips through the Ria Formosa lagoon are the best way to see the islands and birdlife; operators typically run tours in the morning and afternoon (book ahead).
Modern cultural complex; the Oceanogràfic (aquarium) opens typically 10:00–18:00 and the science museum has varying hours — allow 2–3 hours if entering.
If returning to the UK by rail, take a TGV to Paris (approx 6.5–7h) and then Eurostar to London; this is a full travel day so plan connections carefully.
Connect in Paris (Gare du Nord) for Eurostar to London St Pancras, then domestic rail to Wolverhampton — end of rail circuit. Alternatively, spend extra time in Barcelona and fly home if preferred.