Nicholas Crane visits Bamburgh in Northumberland, whose castle sits on a basalt crag.
14/31 Exploring the bonds we have with our neighbours across the North Sea in Denmark.
Zoologist Miranda Krestovnikoff reveals some rockpool secrets.
5/31 The story of Churchill's Pirates and their role in defending the Humber.
22/31 Neil Oliver joins the crew of the last surviving coal-fired, steam-powered Clyde puffer.
26/31 Neil Oliver visits the birth place of Lord Nelson and explores the Norfolk shoreline.
An epic adventure around Britain, exploring 'The Riddle of the Tides'.
6/6 Nick Crane digs deep to discover what it is like to live on Britain's most unusual beach.