Atlas Obscura, an online “compendium of the world’s wonders, curiosities, and esoterica” is hosting their second annual International Obscura Day on April 9, 2011! Obscura Day is an “day of expeditions, back-room tours, and hidden treasures in your own home town,” designed to makes explorers out of everyone, and inspire the kind of curiosity and wonder usually reserved for exotic travels and far flung locations. Events will happen at unusual locations all over the world, hosted by obscure collections, unusual museums, eclectic hidden wonders, and curious-minded individuals! More info about this here