Frank was born in Bree, not the fictional town in Middle-Earth, but an actual city in northeast Belgium. From a young age, he was fascinated by maps and atlases, and the stories they contained. Finding his birthplace on the map in the endpapers of Tolkien's Lord of the Rings only increased his interest in the mystery and message of maps.
While pursuing a career in journalism, Frank started a blog called Strange Maps, as a repository for the weird and wonderful cartography he found hidden in books, posing as everyday objects and (of course) floating around the Internet.
"Each map tells a story, but the stories told by your standard atlas for school or reference are limited and literal: they show only the most practical side of the world, its geography and its political divisions. Strange Maps aims to collect and comment on maps that do everything but that - maps that show the world from a different angle".
A remit that wide allows for a steady, varied diet of maps: Frank has been writing about strange maps since 2006, published a book on the subject in 2009 and joined Big Think in 2010. Readers send in new material daily, and he keeps bumping in to cartography that is delightfully obscure, amazingly beautiful, shockingly partisan, and more.
In a referendum on 23 June, British voters will decide whether or not to leave the European Union, and Americans will decide in November between Hillary Clinton and Donald Trump.
Most maps are directional tools, but some are their own destination, like this fun narrative-driven map from the New Yorker.
Shakespeare never visited America, yet the map of the U.S. is dotted with references to his work.
Not every butcher's map has a Tenderloin District
Passport specifications are regulated by the International Civil Aviation Organisation (ICAO), the relative power of your country's passport says a lot about its standing in thew world.
Mass migration is nothing new; the ancestors of modern Europeans themselves came from the Middle East.
Fascinating global inequalities in population, wealth, and religious origin are captured succinctly in these six maps.
These maps show the best and worst qualities of all fifty states in the US, and all European countries.
The arrogance and ignorance of American presidential candidate Donald Trump come alive in these three maps, which continue cartography's wonderful history of satirical takedowns.
Take all the Christians out of the United States and these are the biggest religions for each state: a Buddhist West, a Muslim crescent across the South and Midwest, and a Jewish Northeast.