There is no 'who' - The 'what' - is the channel tunnel.
In the southeast of Wales. It passes through Newport and joins the Severn Estuary.
the Sydney Harbour bridge
England
France.
giant camel
France
the channel tunnel
The Saône joins the River Rhone, in Lyon France.
united natins
The Strait of Gibraltar joins the Atlantic Ocean and the Mediterranean Sea. It separates the European countries of Gibraltar and Spain from the African country of Morocco.
Great Britain, an island of the United Kingdom also referred to as England, joins three neighbors to make up the UK. Great Britain's neighbors are Ireland, Scotland, and Wales.
The only 'structure' is the Channel Tunnel.