The main World War 2 defence artillery battery for the Sound of Hoy was the Ness Battery. A few buildings remain. They have that vaguely Deco style of a lot of World War 2 fortifications. We missed the guided tour so didn’t get the full access. We’d only gone out for an evening stroll.

Shore Battery. Atlantic/Pentland Firth beyond:-

Graemsay and Hoy from Ness Battery:-

Concrete tower. This was just beyond the Ponte de São João. It looks a bit like an aircraft control tower but there wasn’t an airport nearby:-

Multi-chimneyed building:-

River bank Church. Note tiles on gable end facing the river:-

River boats, buildings and Igreja de Santa Clara Church on hill crest:-

Igreja de Santa Clara Church on centre-left of photo:-

Port warehouses and old style boats:

On the hill here can be seen a dome that we were told by the river-tour guide was the only building left from an Exhibition that had been held in Porto:-

Beyond the Arrábida Bridge before we had to turn back we got a view of the mouth of the river Douro as it meets the Atlantic:-