Visitors are pictured at the Great Ballroom of Noordeinde Palace in The Hague, the Netherlands, on July 22, 2026. Noordeinde Palace, the working palace of the Dutch King Willem-Alexander, opens to public from July 22 to August 9, 2026. (Photo by Sylvia Lederer/Xinhua)

Visitors visit an exhibition at the Great Ballroom of Noordeinde Palace in The Hague, the Netherlands, on July 22, 2026. Noordeinde Palace, the working palace of the Dutch King Willem-Alexander, opens to public from July 22 to August 9, 2026. (Photo by Sylvia Lederer/Xinhua)

Visitors visit the Green Antechamber of Noordeinde Palace in The Hague, the Netherlands, on July 22, 2026. Noordeinde Palace, the working palace of the Dutch King Willem-Alexander, opens to public from July 22 to August 9, 2026. (Photo by Sylvia Lederer/Xinhua)

The photo taken on July 21, 2026 shows the balcony room of Noordeinde Palace in The Hague, the Netherlands. Noordeinde Palace, the working palace of the Dutch King Willem-Alexander, opens to public from July 22 to August 9, 2026. (Xinhua/Shao Haijun)

Visitors visit the Putti Room of Noordeinde Palace in The Hague, the Netherlands, on July 22, 2026. Noordeinde Palace, the working palace of the Dutch King Willem-Alexander, opens to public from July 22 to August 9, 2026. (Photo by Sylvia Lederer/Xinhua)

A visitor is pictured at the gallery of Noordeinde Palace in The Hague, the Netherlands, on July 21, 2026. Noordeinde Palace, the working palace of the Dutch King Willem-Alexander, opens to public from July 22 to August 9, 2026. (Xinhua/Shao Haijun)