Top Gear

MegaStructures is a documentary television series appearing on the National Geographic Channel in the United States and the United Kingdom, Channel 5 in the United Kingdom, France 5 in France, and 7mate in Australia. Each episode is an educational look of varying depth into the construction, operation, and staffing of various structures or construction projects, but not ordinary construction products. Generally containing interviews with designers and project managers, it presents the problems of construction and the methodology or techniques used to overcome obstacles. In some cases this involved the development of new materials or products that are now in general use within the construction industry. MegaStructures focuses on constructions that are extreme; in the sense that they are the biggest, tallest, longest, or deepest in the world. Alternatively, a project may appear if it had an element of novelty or are a world first. This type of project is known as a Megaproject.

Actor Zac Efron journeys around the world with wellness expert Darin Olien in a travel show that explores healthy, sustainable ways to live.

Best friends Ewan McGregor and Charley Boorman gear up for their fourth Long Way series—this time going from Ewan's home in Scotland to Charley's in England. They'll take the scenic route, of course, through 17 European countries on cranky old bikes.

Don Wildman unearths relics from the world's greatest institutions to reveal secrets from the past. He examines each artifact to illuminate history's most incredible triumphs, sensational crimes and bizarre encounters.

This docuseries takes an unprecedented look at the enduring and influential legacy of DC, allowing fans to rediscover the universe of characters, as well as the iconic comic book company’s origins, its evolution and its nearly nine-decade cultural impact across every artistic medium.

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TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today.