Although King Narai's reign witnessed the greatest extent of foreign influence at the Siamese court, his diplomatic achievements were to be reversed by his successor.
It is debatable whether the new introspective attitude of his successors contributed to the weakening and eventual fall of Ayutthaya.
On the other hand, the curtailing of foreign influences in the court may have prevented the colonisation of Ayutthaya.
Nevertheless, his reign's diplomatic achievements contributed to him being posthumously styled "the Great," one of seven recognised as such in the history of Thailand.

At the same time, the records of those involved in the diplomatic missions, particularly those from the west, have allowed historians to obtain a rare glimpse into the world of the Ayutthayan court as most original Ayutthaya records were destroyed with the city in 1767.
These include the French accounts of the Chevalier de Chaumont, the Abbé de Choisy, Fr.
Tachard, Claude de Forbin, de la Loubere and the Persian account of Muhammad Rabi' ibn Muhammad Ibrahim.
Domestically, the relative stability during his reign also gave rise to the revival of Siamese literature during his reign.

Further afield, one of the main streets of the city of Brest as well as another in Marseilles have been named "Rue de Siam" to commemorate Narai's missions, whilst an ancient street in Lop Buri Province, where Narai dwelt at the time he received the Chevalier de Chaumont, has been named "Rue de France" by the Thai government in 1985 to commemorate the 300th anniversary of the relations between the two countries.

In addition, among the gifts that were exchanged between the Siamese and the French courts, two items from Siam were to have an unexpected impact on French history.
The items were a pair of silver cannons that were eventually stored in the Royal Furniture Repository in Paris since they were classed as gifts rather than weapons.
After failing to find usable weapons at the Arsenal, rioting Parisians broke into the Repository and discovered some 20 cannons.
However, the Siamese cannons were the only ones that still functioned, and so they were hauled to the Bastille.
The date was 14 July 1789.
Although King Narai's reign witnessed the greatest extent of foreign influence at the Siamese court, his diplomatic achievements were to be reversed by his successor. It is debatable whether the new introspective attitude of his successors contributed to the weakening and eventual fall of Ayutthaya. On the other hand, the curtailing of foreign influences in the court may have prevented the colonisation of Ayutthaya. Nevertheless, his reign's diplomatic achievements contributed to him being posthumously styled "the Great," one of seven recognised as such in the history of Thailand.
At the same time, the records of those involved in the diplomatic missions, particularly those from the west, have allowed historians to obtain a rare glimpse into the world of the Ayutthayan court as most original Ayutthaya records were destroyed with the city in 1767. These include the French accounts of the Chevalier de Chaumont, the Abbé de Choisy, Fr. Tachard, Claude de Forbin, de la Loubere and the Persian account of Muhammad Rabi' ibn Muhammad Ibrahim. Domestically, the relative stability during his reign also gave rise to the revival of Siamese literature during his reign.
Further afield, one of the main streets of the city of Brest as well as another in Marseilles have been named "Rue de Siam" to commemorate Narai's missions, whilst an ancient street in Lop Buri Province, where Narai dwelt at the time he received the Chevalier de Chaumont, has been named "Rue de France" by the Thai government in 1985 to commemorate the 300th anniversary of the relations between the two countries.
In addition, among the gifts that were exchanged between the Siamese and the French courts, two items from Siam were to have an unexpected impact on French history. The items were a pair of silver cannons that were eventually stored in the Royal Furniture Repository in Paris since they were classed as gifts rather than weapons. After failing to find usable weapons at the Arsenal, rioting Parisians broke into the Repository and discovered some 20 cannons. However, the Siamese cannons were the only ones that still functioned, and so they were hauled to the Bastille. The date was 14 July 1789.
Narai