Most people are content to spend their lives achieving modest but realistic goals. They aim to rise towards the top of their business or to do well at the gym in the sport of their choice. And then there are the people who aim for more. These are the people who don't just run marathons but are ultramarathoners, the people who don't just walk regular buy actually walk around the world. What drives these people to do what they do? Maybe it's an internal urge to be the best at something. Or maybe they're just plain crazy.

Have you ever wondered where the government stores its most precious documents and artifacts, or where they process top secret information and carry out military attacks on the enemy? This is a list of 15 of the most secret and secure facilities on the planet, many of which you probably have never even heard of because their locations are classified. Many of these secret bases are hidden beneath the ground, inside of a mountain or located in the middle of nowhere, so it is difficult to establish exact information on them. However, it is intriguing to get a glimpse into these hidden and murky worlds, even if it is only from the outside.

The earth is getting warmer and warmer with each year that passes and that means we're going to see some significant changes in the land around us. For a few lucky places, global warming means positive things. For example, British Columbia is hoping that the extra few temperature points could mean a more Mediterranean climate that will boost their wine business and take industry away from wine hot spots like the South of France and the United States' Napa Valley. However, a great number of places aren't going to be nearly so lucky.

In addition to those wine hot spots that will be economically destroyed when the weather warms up, there are a large number of beautiful places that are going to devastated if global warming comes to pass. Numerous vacation destinations that are revered for their beauty and tranquility will drop off the map as the heat eats up the very things that make them appealing to travelers today. Famous diving spots, much-loved coastal cities and famous landmark attractions are all at risk of being lost to the global rise in temperatures.

Some of the most fascinating man-made structures on earth are the massive auditoriums that were once used for theatrical performances, music shows, as well for more sinister purposes such as violent wild animal shows and gladiatorial contests. These awesome theatres have a historical stigma attached to them, and in some cases, history is still being made because some are still being used today.

It's hard to believe that some of these theatres are close to 3,000 years old, and it's amazing that they're even still standing. The amount of engineering knowledge that our ancient ancestors had developed is just as mesmerising especially when some of these auditoria rival present-day outdoor theatres in terms of acoustic properties. That's amazing for a 2,000 year old theatre that is large enough to seat 25,000 people or more!

Around the world stand empty hotels that symbolise the loss of prosperity and the death of dreams. Lavish resorts and small hotels which were once filled with life and activity are now abandoned and filled only with decay. Expensive hotels that began to be erected in areas of the world where development was anticipated now remain half-built in areas of the world where tourists rarely go. Abandoned hotels range from decrepit to like-new and exist everywhere from remote parts of the globe to modern urban cities. Following are some of the most interesting of those spots that serve as reminders that even the best laid plans don't always work out over time.