From a young age, Frank 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.
All 24 cantons would meet at St Stephen's cathedral in Vienna
The quest began with a simple enough question: "Where is the skull of Andreas Vesalius?"
Comparing NYC to Luxembourg, by way of iceberg A-68
Four countries around the world host both Russian and American military bases.
The Tour is both the oldest and most popular of the world's major cycling races. The Tour has been to Holland more often than it has been to Corsica.
Perhaps it is more doable now than when it was first proposed, back in the early 1980s
How do you say 'Mind the gap' in Latin?
Fancy a game of Japanese chess?
It's not the ice that turns Greenland white, but the lack of data
Will your grandchildren live in cities on Antarctica?