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Space: The eerie world of abandoned Space Age projects. What became of the HARP gun in Barbados and the mountainside Barcroft Observatory in California? Find out today.

Hear about some magnificent bridges that time forgot. A hurricane put paid to Goat Canyon Trestle in California, while Kinzua Viaduct was destroyed by a tornado.

100 motorbikes come in for auction from every era of the 20th century. Also, the team assess a 1965 Vanden Plas Princess with a four litre Rolls Royce engine.

A rusty 1970 Fiat 500 goes under the hammer - Derek reckons it's the kind of vehicle that is so iconic that it has to be saved.

How did Heinrich Himmler plan to realise Hitler's vision of a pure Aryan Germany? Actor Laurence Olivier explains as he narrates the acclaimed documentary series about WWII.

As Hitler's shadow engulfs Europe, ancient castles across the continent fall under Nazi control and are transformed to serve the ambitions of the Third Reich.

Fiona Bruce presents more valuations from Hever Castle in Kent, where items include a medal given to a man who helped rescue survivors from the Titanic.

Fiona Bruce heads to the Great Hall at the University of Birmingham, where items up for valuation include a 15th-century ring found by a metal detector enthusiast.

Paul hits the road to collect an old navy ambulance that served its time as a holiday camper.

Dave travels to Bedale to extract a barn find - a 1984 Manta GTE which hasn't seen the light of day in thirty years.

How did Heinrich Himmler plan to realise Hitler's vision of a pure Aryan Germany? Actor Laurence Olivier explains as he narrates the acclaimed documentary series about WWII.

As Hitler's shadow engulfs Europe, ancient castles across the continent fall under Nazi control and are transformed to serve the ambitions of the Third Reich.

Fiona Bruce presents more valuations from Hever Castle in Kent, where items include a medal given to a man who helped rescue survivors from the Titanic.

The workshop gets a new wall and floor. Meanwhile, Sam Lovegrove mends Dom's vintage motorbike for a nail-biting cliff top trial. Plus, cider, an orchard and an auction are on the menu.

Jack's off to East Yorkshire for an iconic 80's motor, where a Ford enthusiast is thinning out his herd of nine Escorts.

Derek's in Bromsgrove on the trail of a rare mark 2 Aston Martin DB6. Plus, Jack and Charlie collect an even rarer Toyota Celica Supra in Cheshire.

Paul hits the road to collect an old navy ambulance that served its time as a holiday camper.

Dave travels to Bedale to extract a barn find - a 1984 Manta GTE which hasn't seen the light of day in thirty years.

100 motorbikes come in for auction from every era of the 20th century. Also, the team assess a 1965 Vanden Plas Princess with a four litre Rolls Royce engine.

Simon O'Brien restores an enamel roll-top bath and builds a den out of old doors. Henry Cole makes a wall mounted safe from a jerry can and lovingly restores a cheese-making trough.

Footballer Jill Scott joins Robson on a great outdoor adventure in North Yorkshire where they attempt paddleboard yoga and visit a walled garden.

also known as Lee Ridley - joins Robson in County Durham to explore the benefits of the great outdoors and go for a stroll down memory lane.

Shopping from Home.

Hear about some once-great triumphs of marine engineering, now left to rust. A ship graveyard in Maryland has been colonised by wildlife. We go inside a Cold War sub.

Hear about the disused structures that were once at the forefront of power supply, including Budapest's Kelenfold Power Station and New York's Wardenclyffe Tower.

Tucked away in the showroom is a WW2-era Willys Jeep. Its original condition means there might be a bunfight for a military vehicle that's ripe for restoration.

Up for auction this week is a 1980 Ford Escort, a hand-built 1946 Bedford 12 electric car, and a beautiful, red 1957 Austin Healey.

The final death throes of the Third Reich described by Laurence Olivier. Hitler retreats to his bunker as Germany crumbles around him and Allied troops arrive in Berlin.

A Secret to Win the War: In 1942, a mysterious technology is facilitating a deadly Blitz. Desperate for answers, British intelligence sets its sights on an installation in Bruneval, France.

Fiona Bruce and the experts visit Aberystwyth Arts Centre, where objects up for valuation include a set of Native Canadian carvings and a 19th-century musical curio.

Fiona Bruce visits Seaton Delaval Hall in Northumberland, where items up for valuation include a wooden model that may be the world's first toy train.

There's Hollywood glamour in the air as Derek heads out to pick up a Rolls Royce that once belonged to Fred Astaire.

Austin Healeys are classic British vehicles that are difficult to tame. Paul and Charlie have the chance to pick up a trio of these iconic cars in varying conditions.

The final death throes of the Third Reich described by Laurence Olivier. Hitler retreats to his bunker as Germany crumbles around him and Allied troops arrive in Berlin.

A Secret to Win the War: In 1942, a mysterious technology is facilitating a deadly Blitz. Desperate for answers, British intelligence sets its sights on an installation in Bruneval, France.

Fiona Bruce and the experts visit Aberystwyth Arts Centre, where objects up for valuation include a set of Native Canadian carvings and a 19th-century musical curio.

Dom finishes the summer with new refurbished windows sealing the weather out of the workshop. Later, he and Sam head to St Agnes to buy Cornish tin to cast a workshop sign.

Robbie crosses an epic aqueduct near Stratford-upon-Avon and gets stuck in a lock in central Birmingham.

Robbie Cumming begins a new 170-mile journey across the north of England but soon runs into difficulty with a problem with his craft's propeller in Wigan.

Robbie Cumming crosses the Pennines on the picturesque Leeds and Liverpool Canal before lending a hand to hire boaters in Gargrave in North Yorkshire.

Robbie Cumming explores a Victorian village in West Yorkshire, moors up in Leeds Dock, and goes in search of an abandoned Aire and Calder Navigation waterway.

There's Hollywood glamour in the air as Derek heads out to pick up a Rolls Royce that once belonged to Fred Astaire.