U&Eden +1 Friday

Exploring the Tunnels of Gibraltar, a Second World War espionage base, hidden in the Rock of Gibraltar

Exploring a series of vaults, hidden from view in Edinburgh, Scotland that tell a murky story of opportunity, crime and destitution

A chance to buy goods from the comfort of home

Exploring the extensive air raid tunnels hidden beneath Ramsgate. Also, how the former thriving mining town of Butte, Montana repurposed the 10,000 miles of tunnels

Exploring inside the Grand Canyon Caverns - North America's largest dry cave system. Plus, Cold War radar bunkers around the UK

Exploring the forgotten underworld hiding beneath the streets of Cincinnati, USA. Plus, a state-of-the-art Cold War fortress on the shores of Denmark

Exploring the secret, Cold War US government bunker hidden under Greenbrier Hotel in West Virginia; Plus, delve into the depths of a former slate mine in Wales, UK.

Exploring the vast 400-mile Mammoth Cave in Kentucky, USA. Plus, a newly constructed opening into a metal mine in Wales - untouched for over 70 years

Exploring hidden defences that have kept Cork Harbour, in Ireland, safe for over 400 years. Plus, a former submarine base in the fjords of northern Norway

Exploring the extensive air raid tunnels hidden beneath Ramsgate. Also, how the former thriving mining town of Butte, Montana repurposed the 10,000 miles of tunnels

Exploring inside the Grand Canyon Caverns - North America's largest dry cave system. Plus, Cold War radar bunkers around the UK

CID officers set out on the trail of a thug who has stolen an important briefcase. Long-running drama with the bobbies and detectives at London's Sun Hill police station

Police officers investigate an old fashioned safe cracker. Long-running drama with the bobbies and detectives at London's Sun Hill police station

Quiz in which contestants try to score the fewest points possible by giving the least obvious correct answers to questions. Presented by Alexander Armstrong, with Richard Osman

Quiz in which contestants try to score the fewest points possible by giving the least obvious correct answers to questions. Presented by Alexander Armstrong, with Richard Osman

Mia returns to Manchester, having seemingly changed her ways and anxious to bury the hatchet. However, her conflict with Allie soon resurges

CID officers set out on the trail of a thug who has stolen an important briefcase. Long-running drama with the bobbies and detectives at London's Sun Hill police station

Police officers investigate an old fashioned safe cracker. Long-running drama with the bobbies and detectives at London's Sun Hill police station

Quiz in which contestants try to score the fewest points possible by giving the least obvious correct answers to questions. Presented by Alexander Armstrong, with Richard Osman

Quiz in which contestants try to score the fewest points possible by giving the least obvious correct answers to questions. Presented by Alexander Armstrong, with Richard Osman

Mia returns to Manchester, having seemingly changed her ways and anxious to bury the hatchet. However, her conflict with Allie soon resurges

Exploring inside the Grand Canyon Caverns - North America's largest dry cave system. Plus, Cold War radar bunkers around the UK

Exploring the forgotten underworld hiding beneath the streets of Cincinnati, USA. Plus, a state-of-the-art Cold War fortress on the shores of Denmark