var map = L.map('map').setView([48.624058618779, 2.4272403919108], 13);

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
    attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
}).addTo(map);

L.marker([48.624058618779, 2.4272403919108]).addTo(map)
    .bindPopup('Université d\'Évry val d\'Essonne <br><br> 23 Boulevard François Mitterrand,<br> 91000 Évry-Courcouronnes')
    .openPopup();