Mont Blanc massif led to calls to limit access to the most popular summits and for the mountains to be treated with greater respect. The Mont Blanc massif has provided numerous opportunities for academic research, dating back to the very first ascent of Mont Blanc in 1786 during which Michel Paccard carried scientific equipment to confirm it as the highest summit. In 1820, an ill-fated expedition led by Dr Hamel included pigeons intended for release at varying altitudes to measure the impact of reduced air density on their ability to fly. In 1890, Joseph Vallot built a small meteorological observatory at approximately between
Alexis Paccard of public buildings. He worked at the Louvre and the Tuileries under the direction of Louis Visconti. In 1854, he was an architect of the Château de Rambouillet, then Palace of Fontainebleau. In December 1863 he became professor of architecture at the Ecole, and among his students was Albert-Félix-Théophile Thomas. Alexis Paccard Alexis Paccard (12 June 1813 – 18 August 1867) was a French architect. Paccard entered the École nationale supérieure des Beaux-Arts in Paris in 1830 in the workshops of Louis-Hippolyte Lebas and Jean-Nicolas Huyot. He won the Second Grand Prix in 1835 for a medical school, and won