Introduction

A Preview

"In eighteen oh-three, the United States doubled in size because of a real estate transaction that happened in this building right here. Fifteen million dollars. Eight hundred and twenty-eight thousand square miles. That works out to about three cents an acre. You pay more than that for a gumball. The man who sold it — Napoleon — needed cash for a war."

Hear the full story in the app — narrated and timed to play right where you're standing.