Spanish Prime Minister Mariano Rajoy and Japanese Crown Prince Naruhito met here on Wednesday to discuss the Spain-Japan Dual Year commemorating 400 years of bilateral relations.

The pair took advantage of the occasion to discuss the European economic environment, and Rajoy explained Spain's particular situation and the reforms undertaken to the crown prince, the Spanish government reported.

This is the sixth visit to Spain by the heir to the Japanese throne.

The Dual Year, inaugurated on Tuesday, constitutes a significant opportunity to deepen and intensify relations between the two countries, the Spanish government said in a communique.

For Spain, the Dual Year serves a triple purpose: a chance to project a modern and up-to-date image, to create new economic opportunities for both nations and to foster a more dynamic relationship between the two societies, especially in the academic, science and technology and cultural industries spheres.

To accomplish that, more than 100 activities and events have been scheduled in Japan.

It also presents an opportunity to strengthen commercial and investment ties between the two countries, Spanish officials said.

Naruhito on Wednesday, accompanied by Spain's Crown Prince Felipe, got to know the Madrid water supply system during a visit to the Canal de Isabel II control center, an installation operated by the public company that manages the capital's water supply.

The visit was requested by Naruhito, an expert on water resources and treatment whose Oxford University thesis was on the subject of river navigation on the Thames during the 19th century. EFE