### 1. **The Voynich Manuscript**
- A **240-page book** written in an unknown language with bizarre illustrations of plants, astronomy, and human figures.
- Carbon-dated to the **15th century**, but no one has deciphered its meaning.
### 2. **The Bermuda Triangle**
- A region in the Atlantic Ocean where **ships and planes mysteriously vanish** (e.g., Flight 19 in 1945).
- Theories range from methane bubbles to electromagnetic anomalies—but no definitive answer.
### 3. **The Taos Hum**
- A **low-frequency humming sound** heard by residents of Taos, New Mexico, and other places worldwide.
- No scientific explanation—some believe it’s electromagnetic, while others think it’s mass hysteria.
### 4. **The Wow! Signal**
- In 1977, a **72-second radio signal** from deep space was detected by Ohio’s Big Ear telescope.
- It matched no known natural phenomenon and has never been heard again.
### 5. **The Dancing Plague of 1518**
- In Strasbourg, France, **hundreds of people danced uncontrollably** for days, some dying from exhaustion.
- Possible causes: mass hysteria, ergot poisoning, or a stress-induced trance.
### 6. **The Dyatlov Pass Incident**
- In 1959, **9 experienced hikers** in Russia died under bizarre circumstances—tents ripped open, bodies with missing eyes/tongues, and radiation traces.
- Theories: avalanches, secret military tests, or even "Yeti" attacks.
### 7. **The Mary Celeste**
- A **ghost ship** found adrift in 1872 with no crew—food still on tables, cargo intact, and lifeboat missing.
- No signs of struggle, piracy, or storms. What happened remains a mystery.
### 8. **The Nazca Lines (Peru)**
- **Giant geoglyphs** (some over 1,000 ft long) etched into Peru’s desert, depicting animals and geometric shapes.
- Created **2,000 years ago**—how and why? Some suggest astronomical or ritual purposes.
### 9. **The Tunguska Event (1908)**
- A **massive explosion** in Siberia flattened **800 square miles** of forest—equivalent to **1,000 Hiroshima bombs**.
- No crater found; theories include a meteor airburst, black hole, or even Nikola Tesla’s experiments.
### 10. **The Oak Island Money Pit**
- A **booby-trapped pit** in Nova Scotia, Canada, believed to hold pirate treasure or religious relics.
- Despite **200+ years of digging**, no treasure has been found—just strange artifacts and flood tunnels.
### **Bonus: The Zodiac Killer’s Unsolved Ciphers**
- A serial killer in the 1960s sent **coded messages** to newspapers—some remain unsolved.