Walking around Mexico City is a great way to get a feel for this gigantic metropolis, take in the sites and perhaps grab a torta de tamal along the way. While this may be a lot of fun, many streets can be filled with obstacles like uplifted sidewalks from roots, sunken areas from the fact that the city was built where a lake once stood, crazy slopes, and very hard metal poles right at shin height that are thought to help keep cars from parking on the sidewalk (see example in the image below). Things like these can be disasterous for all types of wheels as well as those of us who are just plain clumsy. However, like the photo above shows, some areas are being patched and ramps are added to provide access for all that wish to travel on the sidewalks. Whether the ramps are helpful or yet another obstacle in the pedestrian's path, I'm not really sure (note how the upper ramp leads right to one of those nasty shin-height metal poles I mentioned) but hey, it's the thought that counts!