It's a section of a map that shows every building in The Netherlands, all 9,866,539 of them, each color-coded by the age it was constructed. History buffs, pick up your jaws now and get exploring ...

An old map believed to mark the spot where German soldiers hid treasure worth millions of dollars during World War II sparked the imagination of amateur treasure hunters in the Netherlands this week.

Erisman and Brouwer made the map by dividing the Netherlands into squares of 1 by 1 kilometer and by calculating for each square where the nitrogen emissions from that square end up. Erisman ...