Castles FULL EPISODE | World's Greatest Engineering Icons | PBS America

From the citadel of Aleppo to the infamous London Tower, discover a variety of iconic, historic fortifications built to protect and defend territory, people and possessions.
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Welcome to PBS America, a British TV channel from America’s public service broadcaster, PBS, showcasing award-winning American history, science, current affairs, plus arts and culture shows alongside the works of living legend Ken Burns, output is all hand-picked by a British team.
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