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Best Documentary Series

Reviewed by Lunoo Research Team · Updated Jun 18, 2026

25 ranked ·

Top-rated documentary series ranked by our AI-powered scoring system.

· Re-ranked 2 days ago
25 Items Ranked
7.8 Avg Score
3 Rated Excellent
9.4 Top Ranked Score
Summary: The best documentary series in 2026 is Planet Earth II (BBC) with a score of 9.4/10, followed by The Last Dance (ESPN) (9.1) and Free Solo (2018) (9.0). This ranking is based on Lunoo's AI-powered scoring system which evaluates 25 documentary series across category fit, feature coverage, pricing signals, public reception, recency, and value. Rankings were last refreshed on Jun 18, 2026.

table_chart Top 5 at a Glance

# Name Score Price Best For
#1 Planet Earth II (BBC) Planet Earth II (BBC) 9.4 - -
#2 The Last Dance (ESPN) The Last Dance (ESPN) 9.1 - - Visit
#3 Free Solo (2018) Free Solo (2018) 9.0 - -
#4 Ken Burns: The Civil War (2011) Ken Burns: The Civil War (2011) 9.0 - -
#5 Prehistoric Planet II Prehistoric Planet II 8.7 - - Visit

leaderboard Full Documentary Series Rankings

Best 1 Planet Earth II (BBC)

While older, its visual scope and scientific depth remain unmatched. This series explores diverse ecosystemsfrom the deep sea to the African savannawith breathtaking cinematography. It functions as a...

2 Planet Earth I

The original Planet Earth series set the standard for modern nature filmmaking. It explores various biomes across the globe, from deserts to rainforests. While older than some current releases, its pr...

3 The Last Dance (ESPN)

This series offers an unparalleled, intimate look into the peak years of Michael Jordan and the Chicago Bulls dynasty. It transcends mere sports coverage by delving into the intense pressure, rivalrie...

4 Ken Burns: The Civil War (2011)

While older, its narrative power and use of archival photography remain unmatched. Ken Burns' signature stylecombining evocative music, powerful narration, and primary source photosmakes complex histo...

5 Free Solo (2018)

This film chronicles Alex Honnold's preparation and execution of climbing El Capitan without ropes. It is a masterclass in tension, showcasing not just physical prowess but profound mental fortitude....

6 Paradise Lost

The 'Paradise Lost' trilogy (and subsequent updates) is a seminal work in true crime documentary filmmaking. It initially followed the prosecution of three teenagers for the murders of three young chi...

7 Making a Murderer

This Netflix docuseries follows the case of Steven Avery, a Wisconsin man convicted of murder after previously being exonerated for a sexual assault. 'Making a Murderer' sparked widespread debate abou...

8 Prehistoric Planet II

Building upon the groundbreaking success of the first season, Prehistoric Planet II utilizes cutting-edge CGI and paleontological research to vividly recreate the world of dinosaurs and other prehisto...

9 Our Planet (Netflix)

A monumental effort in environmental storytelling, this series showcases the planet's most breathtaking biomes while simultaneously detailing the threats they face. Its visual scale is unmatched, maki...

10 My Octopus Teacher (2020)

This film offers a deeply personal and meditative experience, documenting the filmmaker's unusual friendship with a wild octopus. Its less about 'facts' and more about connection, patience, and the in...

11 Blackfish (2013)

This film sparked massive debate by focusing on the captivity and subsequent aggression of killer whales (orcas). It challenges the established narrative of human-animal bonding in controlled environm...

12 Cosmos: A Spacetime Odyssey (Neil deGrasse Tyson)

This series brings the grand scale of the cosmos to life with stunning visuals and accessible explanations. It tackles massive conceptsfrom the Big Bang to exoplanetswithout sacrificing scientific acc...

13 Walking with Beasts

Walking with Beasts is a 2001 six-part nature documentary miniseries examining life during the Cenozoic era following the extinction of non-avian dinosaurs. The series primarily focuses on the emergen...

14 Don't F**k with Cats: Hunting an Internet Killer

This Netflix docuseries is a uniquely disturbing and captivating exploration of how an online community tracked down a man who posted videos of animal cruelty. 'Don't F**k with Cats' showcases the pow...

15 Secrets of the Whales

This documentary series dives deep into the complex social lives and communication methods of whales. Using advanced hydrophone technology and underwater cameras, it reveals how these massive mammals...

16 The Elephant Whisperers

This Oscar-winning short documentary captures the profound bond between a couple in India and an orphaned elephant. It offers an intimate look at the dedication required for wildlife rehabilitation an...

17 The Deepest Breath

The Deepest Breath is a gripping and emotionally charged documentary following the intertwined journeys of Alessia Zecchini, a competitive freediver, and Stephen Keenan, a safety diver. The film expl...

18 Dark History

Dark History delves into the darkest corners of human history, focusing on unsolved crimes, notorious criminals, and chilling historical events. The channel utilizes a combination of archival footage,...

19 Life on Our Planet

Narrated by David Attenborough, Life on Our Planet is a powerful call to action. It showcases the incredible diversity of life on Earth while explaining how human activity has impacted these systems....

20 Wild Kratts

While technically a hybrid of live-action and animation, Wild Kratts serves as an essential educational tool for children to learn about wildlife. It follows two siblings who travel the world to study...

21 Retro Report

Retro Report offers concise documentary series examining significant historical events. Each episode analyzes a contemporary issue by revisiting its origins, demonstrating how past reporting and decis...

22 The Omnivore's Dilemma

The Omnivore’s Dilemma is a documentary series examining the complexities of contemporary food systems. Michael Pollan meticulously follows the journey of food from its origins in agriculture to the c...

23 Sound Field

Sound Field is a documentary series examining the nature of sound and its profound relationship to human experience. It investigates musical traditions across time periods alongside scientific researc...

24 The Water Will Come

“The Water Will Come” is a documentary series examining the accelerating threat of rising sea levels due to climate change. Jeff Goodell’s investigative journalism explores the profound consequences f...

25 The Coldest Case in Denmark

The Coldest Case in Denmark is a gripping true-crime documentary series based on a popular Danish podcast. It investigates the 1960 murder of a young girl, a case that remained unsolved for decades. U...

26 The Great Hack (2019)

This series zeroes in on the Cambridge Analytica scandal, providing a chilling look at how personal data can be weaponized for political ends. It is a crucial, if somewhat sensationalized, look at the...

27 Planet Earth: Humanity (BBC)

This series shifts the focus from pure wildlife to human civilization's impact on the planet and each other. It examines how different cultures interact with their environments and each other across m...

28 Planet Earth: The Story of the Planet (BBC)

This series takes a deep, sweeping look at the physical processes that have shaped Earth over billions of years. It covers everything from continental drift to the formation of life-sustaining oceans....

29 The Inventor: Genius, Greed, and the Patent Wars

This series dives into the complex, often ruthless world of patent law and corporate innovation. It examines how groundbreaking ideas can be stifled or monopolized by legal maneuvering. It serves as a...

30 Planet Earth: The Abyss

This series takes viewers into the deepest, least-explored trenches of the ocean. It showcases life forms that thrive under unimaginable pressure, total darkness, and extreme conditions. It is a testa...

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help Frequently Asked Questions

What is the best Documentary Series in 2026?
According to our AI-powered rankings, Planet Earth II (BBC) is currently rated as the best Documentary Series with a score of 9.4/10. Other top-rated options include Planet Earth II (BBC), The Last Dance (ESPN), Free Solo (2018).
How are these Documentary Series ranked?
Our rankings use an AI-powered scoring system that analyzes category fit, feature coverage, pricing signals, public reception, recency, and value for money. Each Documentary Series receives a 0 to 10 Lunoo score.
How often are the rankings updated?
Our rankings are updated continuously as new data becomes available. Scores are recalculated regularly to ensure you always see the most current and accurate ratings.
What are the top 5 Documentary Series in 2026?
The top 5 Documentary Series in 2026 are: Planet Earth II (BBC), The Last Dance (ESPN), Free Solo (2018), Ken Burns: The Civil War (2011), Prehistoric Planet II. These are ranked by our AI-powered scoring system based on category fit, features, pricing signals, public reception, and recency.
How many Documentary Series are ranked on Lunoo?
Lunoo currently ranks 25 Documentary Series, of which 3 have earned a Brilliant rating (9.0+). New options are added and scored regularly.
Which Documentary Series is ranked first?
Planet Earth II (BBC) is currently ranked #1 with a Lunoo score of 9.4/10 in our Documentary Series rankings.
Is Planet Earth II (BBC) worth it?
Planet Earth II (BBC) scores 9.4/10, making it one of the highest-rated Documentary Series available. Its strong rating reflects excellent performance across our evaluation criteria.
What should I look for when choosing a Documentary Series?
Key factors include your specific use case, budget, features offered, ease of use, and long-term value. Our scoring system evaluates these factors objectively. Compare the top options above to find the best fit.
Are there any free Documentary Series options?
Some Documentary Series offer free plans or trials. Check each option's website for current pricing. Our rankings focus on overall quality regardless of price point.
What is the difference between top-rated Documentary Series?
While Planet Earth II (BBC) and The Last Dance (ESPN) are both highly rated, they differ in features, pricing, and target audience. Use our comparison tool to see detailed side-by-side differences.
Can I compare Documentary Series on Lunoo?
Yes! Lunoo offers a detailed comparison tool. Click the compare icon on any two items to see a side-by-side analysis of scores, features, pros, and cons.
How accurate are Lunoo's Documentary Series rankings?
Our AI-powered scoring system is calibrated against established ground truth sources and continuously improved. We analyze features, expert reviews, user feedback, and market data to provide the most objective rankings possible.

science How We Rank

Every documentary series is scored across 12 weighted criteria from hundreds of verified sources:

  • Features & Capabilities - Comprehensive analysis of what each option offers
  • User Reviews - Aggregated feedback from real users across platforms
  • Expert Opinions - Professional reviews and industry recognition
  • Value for Money - Cost-effectiveness relative to features
  • Reliability & Support - Track record and customer service quality

Rankings are updated continuously as new information becomes available.

Disclosure: Some links on this page may be affiliate links. If you make a purchase through these links, we may earn a small commission at no extra cost to you. This does not influence our rankings - all scores are determined by our independent AI-powered evaluation system.

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