How Big Really

It's hard to comprehend the size and impact of natural disasters, or the distance traveled by explorers both on land and in space. Dimensions, a site by the BBC, helps us understand them by overlaying them relative to the size of somewhere we can all comprehend: our own country.
Built using google map's API, the site shows us for example, how much of England would have been affected by the floods in Pakistan:

How much of London would have been affected by the Gulf of Mexico Oil Spill:

Or the depth of the deepest hole ever built: The Kola Superdeep Borehole (Russian: Кольская сверхглубокая скважина):

Thanks to Ronan for the link.