Hôtel des Princes, A private mansion in Eaux-Bonnes (Pyrénées-Atlantiques).

The Hôtel des Princes is a former hotel on avenue Castellane in Eaux-Bonnes, built from 1854 for Jean Murret-Labarthe to plans by departmental architect Gustave Lévy. Its Second Empire facade has a pale stone central section with a balcony and three arched openings per upper floor, flanked by symmetrical red brick wings with rows of rectangular windows. The raised ground floor holds tall arched openings and a dark double door under a stone archway, with a "HOTEL DES PRINCES" sign above and dormer windows along the roof.

Built between 1854 and 1872 by architect Gustave Lévy, the mansion hosted notable figures including Empress Eugénie and the Viceroy of Egypt. These visits demonstrate the residence's importance as a destination for European high society.

The hotel's name comes from its princely clientele: guests included Empress Eugénie around 1860, the Viceroy of Egypt Ismaïl Pacha in 1869 and Thành Thái, emperor of Annam, in 1897. The monumental staircase still begins with a carved face of Eugénie by Béarnais sculptor R. Castaing. The building has been abandoned since 1975 and is closed to visitors.

The former hotel stands at no. 16, avenue Castellane, at the foot of a wooded slope, and has been abandoned since its closure in 1975, so the interior is unsafe and closed off. It was listed as a monument historique in full by decree of 28 November 2002. The facade, with its pale stone centre, brick wings and "HOTEL DES PRINCES" sign above the door, is what can be seen from the street.

The sculpted face at the base of the grand staircase's handrail is that of Empress Eugénie de Montijo, carved by the Béarnais sculptor R. Castaing. The hotel also served as a temporary casino while the municipal casino was delayed by a lawsuit in the early 1870s.