Ordesa y Monte Perdido National Park was created in 1918.
The largest U-shaped valley in Europe is Ordesa Valley, located in the Spanish Pyrenees within the Ordesa and Monte Perdido National Park. This stunning valley was carved out by glaciers during the Ice Age and is a popular destination for hiking and nature enthusiasts.
I can find no reference to a saint named St. Agnes of Monte Perdido.
Enric Balasch i Blanch has written: 'Egipto' 'El Parque Nacional de Ordesa y Monte Perdido' -- subject(s): Guidebooks 'Cuba' -- subject(s): Description and travel 'La cruz de tau'
Monte Alén National Park was created in 1990.
Monte Vista National Wildlife Refuge was created in 1953.
San Jose del Monte National Trade School was created in 1977.
Mont Perdu (in French) or Monte Perdido (in Spanish) is in Pyrenees.
Monte Makaya was created in 1998.
Monte Hermoso was created in 1975.
Monte Plata was created in 1606.
Monte Castro was created in 1703.
Monte Verità was created in 1900.