Mystery Places: Siberian Mega Mine, Most Dangerous Hotel & Extreme Airport

Explore the evolution of sea power - from hydrofoiling catamarans and record-breaking ships to nuclear icebreakers and solar sails shaping the future of exploration. Dive deep into the fascinating history and cutting-edge technology behind humanity’s ongoing quest to conquer the sea. This episode unpacks the incredible journey from the earliest waterborne craft to today’s marvels like the hydrofoiling catamarans that revolutionized the America’s Cup, experimental vessels inspired by nature such as the WAMB “spider boat,” and the rise of ultra-fast, efficient catamarans dominating commercial travel. Discover the innovations behind the mighty Maersk Triple E container ships, agile tugboats, and the titanic passenger liners that have defined ocean travel, including the legendary Titanic, Queen Mary, and Oasis of the Seas. But the story doesn’t stop at the surface. Learn how nuclear-powered icebreakers clear paths through the polar ice, how remote-operated and autonomous underwater vehicles are unlocking the secrets of the deep, and how engineering challenges have spurred breakthroughs that reach far beyond our oceans. Finally, witness the connection between marine technology and interstellar travel, as solar sails take inspiration from ancient

Inside Frankfurt Airport: The Technology Behind Its New Mega Terminal | FD Engineering As Frankfurt Airport's Terminal 3 takes shape, engineers turn an enormous construction site into a functioning airport. Giant glass panels are lifted onto the control tower, the first 32-ton automated Skyline train arrives, passenger areas take shape, and engineers install kilometers of technical infrastructure. Deep inside the terminal, engineers begin commissioning the automated baggage system that will eventually move luggage through 15 kilometers of conveyors. ▬▬▬▬▬▬▬▬▬ ▬▬▬▬▬▬▬▬▬ “Engineering: the branch of science and technology concerned with the design, building and use of engines, machines and structures.” So says the Webster definition. Our newest Free Documentary family member, Free Documentary - Engineering, focuses on engineering and brings our community the best engineering documentaries.

Building a Mega Airport: The €4 Billion Terminal Project | Frankfurt | FD Engineering Frankfurt Airport is expanding with one of Europe's largest infrastructure projects: the €4 billion Terminal 3. Follow the massive construction operation as crews erect three passenger piers, build a 69-meter control tower, and construct a new automated Skyline railway. The project culminates in an extraordinary engineering operation as a 2,000-ton section of the terminal's enormous steel roof is moved into position high above the ground. ▬▬▬▬▬▬▬▬▬ ▬▬▬▬▬▬▬▬▬ “Engineering: the branch of science and technology concerned with the design, building and use of engines, machines and structures.” So says the Webster definition. Our newest Free Documentary family member, Free Documentary - Engineering, is all about engineering - and bringing our community the best documentaries on engineering.

Police officers face life-threatening situations as they respond to knife attacks, dangerous drug dealers, high-speed pursuits and armed domestic incidents. From the London Underground to the streets of Los Angeles and Florida, this episode captures extraordinary bodycam footage of officers making split-second decisions to protect the public

In this episode of Outback Murder Highway, Robin Hvil Bartram and Anita Cunningham set out to hitchhike across Australia in 1972—but only one of them was ever found. More than 50 years later, investigators reopen one of Australia's most haunting cold cases, uncovering new witnesses, possible links to serial killer Ivan Milat, and a potential burial site hidden along the infamous Flinders Highway. Could this finally solve one of Australia's greatest unsolved murder mysteries?

During World War II, an ordinary railway network became one of the most important systems behind one of history's greatest tragedies. This documentary follows the rail routes across Germany, the Czech Republic, and Poland, visiting historic sites while uncovering how millions of people were transported from their homes to ghettos and camps. Along the way, Holocaust survivors, historians, and witnesses share powerful firsthand accounts that bring these events to life. From Nuremberg to Theresienstadt, Chełmno, and Auschwitz-Birkenau, the journey reveals the human stories behind the tracks and the lasting impact they left on the world. Created for historical and educational purposes, this documentary explores the importance of remembrance, the value of survivor testimony, and the lessons history continues to teach future generations.