Latitude and longitude are the units that represent the coordinates at geographic coordinate system. Just like every actual house has its address (which includes the number, the name of the street, city, etc), every single point on the surface of earth can be specified by the latitude and longitude coordinates. Therefore, by using latitude and longitude we can specify virtually any point on earth.
(39.673623, -104.934398) - Google Maps
Denver Academy's pond is located at the intersection of 39N40.38 & 104W56.12.
Courtesy of http://www.bdcc.co.uk/Gmaps/ll_grat_v3_demo.htm