Documentary Collections
Hand-picked documentary collections by subject, free to watch in HD and 4K.
Dr.Doc Kids3,072 kids videos
Ancient Egypt98 films
World War II100 films
The Universe & Cosmos99 films
Ancient Rome97 films
True Crime99 films
Wildlife100 films
The Ocean & Deep Sea98 films
Space Exploration100 films
Ancient Mysteries & UFOs99 films
The Human Body & Medicine99 films
Dinosaurs & Prehistory94 films
Vikings & The Norse World48 films
The Cold War96 films
Volcanoes & Natural Disasters98 films
The Polar Regions97 films
The Human Mind99 films
Money & Wall Street100 films
Aviation & Flight89 films
The Nuclear Age80 films
Everest & Mountaineering73 films
Ancient Greece59 films
Artificial Intelligence49 films
North Korea49 films
Engineering & Megastructures58 films
Big Cats100 films
Spies & Espionage96 films
The Medieval World99 films
Lost Civilizations75 films
Pandemics & Deadly Diseases67 films
Sharks63 films
Drug Cartels & The Narco Wars49 films
Cybercrime & Hackers58 films
Serial Killers49 films
The Mafia & Organized Crime54 films
Cults & Fringe Movements46 films
The Titanic & Great Shipwrecks31 films
Ghosts & The Paranormal27 films
Great Artists & The Masters94 films
Climate & The Changing Planet30 films
The Vietnam War20 filmsBrowse documentaries by subject
Our collections gather the best documentaries on a single subject in one place, so you can go straight to a great film on exactly what you feel like watching. Explore Ancient Egypt, Rome and Greece, the World Wars and the Cold War, the universe and space exploration, wildlife and the deep sea, true crime, dinosaurs, artificial intelligence, engineering and more.
Each collection is a curated shortlist of the strongest, most-watched films on its topic, every one free to stream in HD or 4K with no signup. Pick a subject below and start watching, or browse the full library of 17,072 documentaries.