The Kings of Morocco gave particular importance to the construction of gates and walls of protection in urban localities, not only for defense but also to emphasize their significance in civilization heritage and economic development.
According to the customs, names assigned to the gates of ancient towns were inspired by the region names to which these doors lead, as is the case of Bab Al Bahr Asilah. This gate is located in north-west of the town under the Tower of Honor or Alkamar, the Portuguese name meaning CAMARA room.
This is also known in Portuguese as "Porta Da Riviera", provides access to the sea and ancient port through the Zrireq coffee bar or coffe bar for intellectual, the name given by the citizens of Asilah because this coffee bar is the favorite destination of many artists, poets, writers such as Edmon Imran Al Malih and others. During the occupation of Asilah by Portuguese from 24 August 1471 to 13 September 1578 - after the battle of - Bab Al Bahr played a defensive role and had a huge commercial importance.
Thus, face to the instantaneous attack of Maroccans, the Portugals under the reign of King Don Manuel decided in 1505 to strengthen the doors of Asilah which was realized under the control of the engineer Francisco Di La Ansa by the skilled workers, whose number exceeded 800 specialists. The strategic policy of this building was to minimize the surface area of the city and retreat back towards the sea to find an easy exit in case of necessity on the one hand, and secondly to facilitate control of ships in the Mediterranean and the Atlantic and also to protect the Portuguese oversea trade. To strengthen this gate, manufacturers have imported the decorated rocks from Portugal, the solid stone, lime and other materials in the region of Asilah (Arbaa Ayacha, Beni Arouss, Tendafil, Beni Muslim, Rhouna, Beni Malek ...) Bab Albahr Asilah has lived extraordinary historical moments during the blockade of the city by the Moroccans in 1516 who decided to do the same in Tanger, the chief of Portugal was not surprised at this attack because the military government of Asilah Xuan Dico Teno had a single post method to spread information, particularly in case of danger. He used one of four trained dogs to send mail tied to their necks to the Portuguese chief of Tanger and inform him of the possible danger. The departure of the dogs to Tanger was done from Bab Al Bahr of Asilah.
From the one hand, the issue of this special stamp commemorates a part of the architectural art of Morocco, and from the other hand, it closes series of special emissions of Barid Al Maghrib about the gates of Morocco: Bab Mansour laalej (Meknes) in 1999, Bab El Gharbi (Oujda) in 2001, Chellah (Rabat) in 2002, Bab El Okba (Tetouan) in 2003, Bab Agnou (Marrakech) in 2004, Bab Boujloud (Fez) in 2005 Bab Marchan (Tanger) in 2006, Bab Lamrissa (Sale) in 2007, Bab Al Marssa (Essaouira) in 2008, Bab Mehdia (Kenitra) in 2009.