On my way back, I had a 12-hour layover in London. I've never been to London before, so I definitely took advantage of the time and took a very quick tour of the main tourist sites I could easily reach by subway. Definitely want to go back when I have more time to really see the city and the history!
A big thanks to Mrs. Marilyn for the perfect adivce on how to see the sites I wanted to see in the short time I had. =)