By far one of my favorite cities, London is always giving me new reasons to go back and visit. This time, it is a brand new addition to an incredibly old structure. The city's Tower Bridge, a 120-year-old crossing over the River Thames, is the latest structure to join the club with a see-through walkway that allows visitors to gaze down from 42 meters (138 feet) to the water! Do you think this trend is too much, or is this as cool as I think it is?!