Season
- Season 1 1993-12-10
- Season 2 1994-12-16
- Season 3 1995-08-20
- Season 4 1996-09-02
- Season 5 1997-08-17
- Season 6 1998-07-27
- Season 7 2000-01-03
- Season 8 2001-01-08
- Season 9 2002-01-02
- Season 10 2003-01-01
- Season 11 2004-01-16
- Season 12 2005-01-05
- Season 13 2006-01-04
- Season 14 2007-01-17
- Season 15 2008-01-07
- Season 16 2010-01-14
- Season 17 2010-10-29
- Season 18 2011-10-03
- Season 19 2013-07-16
- Season 20 2021-02-20
- Season 21 2021-07-25
- Season 22 2021-11-28
- Season 23 2022-02-16
Season 23 Episode
- Season 7 Episode 1
- Season 7 Episode 2
- Season 7 Episode 3
- Season 7 Episode 4
- Season 7 Episode 5
- Season 7 Episode 6
- Season 7 Episode 7
- Season 7 Episode 8
- Season 7 Episode 9
- Season 7 Episode 10
- Season 7 Episode 11
- Season 7 Episode 12
- Season 7 Episode 13
- Season 7 Episode 14
- Season 7 Episode 15
- Season 7 Episode 16
- Season 7 Episode 17
- Season 7 Episode 18
- Season 7 Episode 19
- Season 7 Episode 20
- Season 7 Episode 21
- Season 7 Episode 22
- Season 7 Episode 23
- Season 7 Episode 24
- Season 7 Episode 25
- Season 7 Episode 26
- Season 7 Episode 27
- Season 7 Episode 28
- Season 7 Episode 29
- Season 7 Episode 30
- Season 7 Episode 31
- Season 7 Episode 32
- Season 7 Episode 33
- Season 7 Episode 34
- Season 7 Episode 35
- Season 7 Episode 36
- Season 7 Episode 37
- Season 7 Episode 38
- Season 7 Episode 39
Modern Marvels - Season 7 Episode 3 The Chunnel
8.00 44 minutes The challenge of linking Britain and France with a tunnel under the English Channel was both monumental and delicate. It took 18 months just to design and build the 28 foot diameter TBMs, and nearly a year to assemble and position them underground. Modern Marvels takes you through the entire process from start to finish.
