Modern Marvels · SEASON 6
Forts
Episode 41 · 1999-10-25

- Documentary
Episode overview
The art of fortification evolved along with man’s need to defend his territory from attack. There was no other reason. From hills surrounded by branches and crude fences to intricate walled cities, to impenetrable castles – the strongholds of the past echo the history of great battles for territorial control.
44 minutes
Season 6 episodes
1. Demolition1998-07-27
2. The Atlantic Wall1998-08-03
3. History of Tall Buildings1998-08-24
4. Aquariums1998-09-28
5. Las Vegas Hotels.1998-10-06
6. The Oakland Bay Bridge.1998-10-12
7. Monumental Statues1998-10-28
8. Antibiotics: The Wonder Drugs1998-11-03
9. The Police Car1998-11-09
10. Plastics1998-11-23
11. Medical Imaging1998-12-07
12. Extreme Sports Gadgets1998-12-16
13. Bombs1998-12-23
14. Prosthetics1998-12-28
15. Weather Prediction1999-01-01
16. Stereos1999-01-25
17. Mail Delivery1999-02-08
18. Clocks1999-02-22
19. Airships.1999-03-09
20. Physical Fitness1999-03-15
21. Engineering Disasters1999-03-30
22. City Parks1999-04-26
23. Spy Technology1999-05-01
24. Battlefield Medicine1999-05-25
25. U.S. Mints: Money Machines1999-06-21
26. Rescue Equipment1999-07-06
27. Scuba And Deep Sea Diving1999-07-12
28. Offshore Oil Drilling1999-07-19
29. Dynamite.1999-07-20
30. Hoover Dam.1999-08-02
31. Baseball Parks1999-08-09
32. New York Bridges1999-08-23
33. Crash Testing1999-08-31
34. Parachutes1999-09-06
35. Newspapers1999-09-13
36. Fireworks1999-09-27
37. Simulators1999-10-11
38. The Tool Bench: Power Tools1999-10-12
39. The Tool Bench: Hand Tools1999-10-13
40. More Earthmovers.1999-10-18
41. Forts1999-10-25
42. Emergency Room1999-11-08
43. Motorcycles1999-11-15
44. Security Systems1999-11-16
45. More Engineering Disasters.1999-11-29
46. Niagara Power1999-12-08
47. Casino Technology1999-12-13
48. Lost Marvels1999-12-14