Twentieth-century maps of London, oil maps of the Middle East, satirical maps of the world—the British Library houses countless historical masterpieces. Though the Library is closed for the time being, it has digitized one of the most dazzling—and fragile—subsets of its maps collection: European globes of the 16th and 17th centuries. Now you can use 3-D visuals to explore the imaginative artistry of terrestrial and celestial globes. A highlight? The well-represented golden years of 1597 to 1605, when 17 editions of globes were on the market. —J.V.