Leaning Tower Of London

According to London officials, Big Ben (officially known as the clock tower at the Houses of Parliment) has begun leaning at an alarming rate, visible to the naked eye.

The tower first began leaning in 2003, and is tilting at a rate of about a millimeter a year. Officials aren't sure of the cause.

Of course if you're a fan of Doctor Who, you know the reason why Big Ben is leaning:

Yep. It's aliens. Specifically the Family Slitheen from the planet Raxacoricofallapatorius.*

Of course it could also be caused by people doing this.

*If you look closely at Big Ben as the space ship is slicing through it, you can see that the clock face has been reversed. The film makers actually filmed the model spaceship crashing through the miniature clock tower heading left to right. Later they realized that because the previous shot showed the ship traveling right to left, the scene would flow better if the action was reversed. They couldn't afford to rebuild the model and shoot it again, so they simply flopped the image digitally and hoped no one would notice.