One of the prized exhibits is a complete mammoth skeleton. The other two halls are dedicated to painting and history. The painting collection includes works by Juan Correa, Cristóbal de Villalpando and José de Ibarra. The style of architecture prevalent in Europe during the founding of Guadalajara is paralleled in the city's colonial buildings. The Metropolitan Cathedral and Teatro Degollado are the purest examples of neoclassical architecture. The historical center hosts religious and civil colonial buildings, which are noted for their architectural and historical significance and are a rich mix of styles which are rooted in indigenous cultural contributions (mainly from Ute origin), incorporated in the Mozarabic and castizo, and later in modern European influences (mainly French and Italian) and American (specifically, from the United States). Guadalajara's historical center has an excellent assortment of museums, theaters, galleries, libraries, auditoriums and concert halls, particular mention may be made to Hospicio Cabañas (which dates from the 18th century), the Teatro Degollado (considered the oldest opera house in Mexico), the Teatro Galerías and the Teatro Diana. The Hospicio Cabañas, which is home to some of the paintings (murals and easel) by José Clemente Orozco, was declared a World Heritage Site by UNESCO in 1997. Among the many structures of beauty is the International Headquarters Temple of La Luz del Mundo in Colonia Hermosa Provincia, which is the largest in Latin America. During the Porfiriato the French style invaded the city because of the passion of former president Porfirio Díaz in the trends of French style, also Italian architects were responsible for shaping the Gothic structures that were built in the city. The passage of time reflected different trends from the baroque to churrigueresque, Gothic and neoclassical pure. The French-inspired "Lafayette" neighborhood has many fine examples of early 20th-century residences that were later converted into boutiques and restaurants. Even the architectural lines typical of the decades of the 1940s, 1950s and 1960s the Art Deco and bold lines of postmodern architects of the time. Architectural styles found in the city include Baroque, Viceregal, Neoclassical, Modern, Eclectic, Art Deco and Neo-Gothic. The modern architecture of Guadalajara has numerous figures of different architectural production from the neo-regionalism to the primitiveness of the 1960s.