Documentary Collections
Hand-picked documentary collections by subject, free to watch in HD and 4K.
Ancient Egypt100 films
World War II100 films
The Universe & Cosmos100 films
Ancient Rome100 films
True Crime100 films
Wildlife100 films
The Ocean & Deep Sea100 films
Space Exploration100 films
Ancient Mysteries & UFOs100 films
The Human Body & Medicine100 films
Dinosaurs & Prehistory88 films
Vikings & The Norse World49 films
The Cold War100 films
Volcanoes & Natural Disasters100 films
The Polar Regions100 films
The Human Mind100 films
Money & Wall Street96 films
Aviation & Flight86 films
The Nuclear Age74 films
Everest & Mountaineering68 films
Ancient Greece52 films
Artificial Intelligence47 films
North Korea46 films
Engineering & Megastructures54 films
Big Cats100 films
Spies & Espionage100 films
The Medieval World100 films
Lost Civilizations75 films
Pandemics & Deadly Diseases64 films
Sharks62 films
Drug Cartels & The Narco Wars45 films
Cybercrime & Hackers58 films
Serial Killers48 films
The Mafia & Organized Crime52 films
Cults & Fringe Movements45 films
The Titanic & Great Shipwrecks28 films
Ghosts & The Paranormal25 films
Great Artists & The Masters85 films
Climate & The Changing Planet27 films
The Vietnam War21 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 12,767 documentaries.