Home Podcasts Lights Out Library: Sleep Documentaries
Lights Out Library: Sleep Documentaries

Lights Out Library: Sleep Documentaries

Olimpia Pérez 125 Episodes Sep 20, 2026

Lights Out Library helps you fall asleep with soothing stories across a diverse range of topics: science, history, mythology, astronomy, mystery, art and so much more. It makes it possible to both calm and enrich your mind while you drift into dreamland. The podcast is hosted by Olimpia Pérez and offers ad-free listening and bonus content via Patreon.

Episodes

History of Castles | Documentary for Sleep
History of Castles | Documentary for Sleep Sep 20, 2026 3669 In this relaxing story, I tell you about the history of castles in Europe, from the first earthworks from the Bronze Age to Roman castra and finally medieval castles. We follow their development from motte & bailey castles to giant fortresses of the 14th century with dungeons, concentric walls, drawbridges, portcullis, machicolations, moats... I also tell you about medieval society and how castl
Historical Mystery Stories: Secrets of the Druids, Lost Cities, Forgotten Gods (Sleep Documentary)
Historical Mystery Stories: Secrets of the Druids, Lost Cities, Forgotten Gods (Sleep Documentary) Sep 13, 2026 11103 As long compilations of episodes that can accompany you for several hours were requested, we put this new one together. This episode consists of three main topics: - Mysteries of Celtic culture, especially the druids: who were they and what was their role in Celtic societies? - A journey to "lost cities", in particular Machu Picchu in Peru and Meroe in Nubia (Sudan) - Forgotten gods of Antiquity
Mission to Mars: Space Travel and Terraformation
Mission to Mars: Space Travel and Terraformation Sep 6, 2026 5279 This episode is a remastered and improved version of one of the first stories ever released on the podcast. This new version includes updated information, as well as very recent results published in July 2026 from MAVEN, the spacecraft that spent more than 11 years studying Mars and the history of its atmosphere. I also talk about AstroRad, a new device tested in deep space that could help protect
History of Alexander the Great | Documentary for Sleep
History of Alexander the Great | Documentary for Sleep Aug 30, 2026 4840 Alexander the Great is a name that sounds almost more legendary than real. In tonight's episode, we will talk about his time, his life and his conquests. Born from King Philip II of Macedon and Olympias of Epirus, educated by Aristotle, Alexander takes the lead of the League of Corinth, a coalition of Greek states. He leads his army into the conquest of the greatest empire of the time: the empire
History of Furniture | Documentary for Sleep
History of Furniture | Documentary for Sleep Aug 23, 2026 4163 In this soft-spoken sleep story, I tell you about the history of furniture from Prehistory to our days, with an emphasis on French styles from the 17th and 18th Centuries (Louis XIV, Louis XV, and Louis XVI style). I also explain a few different techniques, like veneering, marquetry, and ormolu (gilt bronze). This content is entirely scripted and recorded by real people, it includes no AI, and mi
History of Lost Cities: Machu Picchu, Meroë, Mohenjo-Daro (Sleep Story)
History of Lost Cities: Machu Picchu, Meroë, Mohenjo-Daro (Sleep Story) Aug 16, 2026 3598 In this bedtime story, I tell you about three “lost cities” and the civilizations that built them: • Machu Picchu, built as a retreat for Inca emperors 50 miles from their capital, Cusco, and largely forgotten by the outside world for more than 300 years. • Meroë, the capital of the Kingdom of Kush, along with a brief history of Nubia and its relations with Egypt in antiquity. Before Meroë becam
Review of the Periodic Table of Elements (30 to 118), Bedtime Sleepy Science
Review of the Periodic Table of Elements (30 to 118), Bedtime Sleepy Science Aug 9, 2026 4006 In this science talk for bedtime, I review the periodic table of the elements methodically and explain in simple terms plenty of phenomena and concepts about chemistry and physics (for example in this episode: metalloids, alpha and beta decay, Xenon poisoning of nuclear reactors...) as well as the industrial and economic relevance of some of these elements. For tonight, we continue with elements 3
The Bestiary: Dragon, Unicorn, Elf, Mermaid, Phoenix, Werewolf | Sleepy Mythology & History
The Bestiary: Dragon, Unicorn, Elf, Mermaid, Phoenix, Werewolf | Sleepy Mythology & History Aug 2, 2026 11872 As long compilations of episodes that can accompany you for several hours were requested, we put this new one together. Bestiaries were medieval compendiums that contained information and illustrations of real and legendary animals. Following this ancient tradition, we have put together talks about the origins of different legendary and fantasy creatures. Make yourself comfortable, this will be a
Greek Mythology: The Odyssey (Soft-Spoken Sleep Story, Improved Version)
Greek Mythology: The Odyssey (Soft-Spoken Sleep Story, Improved Version) Jul 26, 2026 4540 In this episode, I tell you the story of the Odyssey, and as in previous mythology videos I discuss a few historical and literary aspects. If you want to know about the lotus-eaters, the cyclopes, the sirens, Aeolus, Circe, Scylla and Charybdis, Calypso, and many more things, relax and enjoy the long journey Odysseus will have to endure to be reunited with his wife Penelope and his son Telemachus.
Neolithic Revolution: How Agriculture Was Invented
Neolithic Revolution: How Agriculture Was Invented Jul 19, 2026 3928 In this episode, I tell you about the transition from the nomadic lifestyle of hunters and gatherers to the sedentary life of the first agricultural communities. We will examine the theories that explain this change, how it took place, and its consequences. Some of these consequences were counterintuitive. For example, the Agricultural Revolution initially led to a deterioration in health and lif
Review of the Periodic Table of Elements (13 to 29), Bedtime Sleepy Science
Review of the Periodic Table of Elements (13 to 29), Bedtime Sleepy Science Jul 12, 2026 3782 In this science talk for bedtime, I review the periodic table of the elements methodically and explain in simple terms plenty of phenomena and concepts about chemistry and physics (for example in this episode: the timeline of the discovery of elements, why there is quite a lot of iron in the universe, endothermic and exothermic fusions...) as well as the industrial and economic relevance of some o
Yellow, White, Black: History of Colors
Yellow, White, Black: History of Colors Jul 5, 2026 4130 In this new sleepy documentary-style story, we will explore the cultural history of three colors: yellow, black, and white. How were pigments for art and crafts or dyes obtained? What were the meanings, symbolisms, and status of these colors across various ancient cultures and to our days? Let's find out. This podcast is entirely scripted and recorded by real people, it includes no AI, and mid-ro

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