If the weather is good, this is a good place to take a stroll, particularly between the Circuito Interior and Av. Insurgentes, especially on a Sunday morning when the street is closed to vehicular traffic. You can still stroll on other days of the week, but be warned, the vehicular traffic is intense, If you are a student of architecture, there is a lot to look at. There are fewer interesting stores and shops than in the past, most of them have relocated to Polanco or farther west. Likewise, the number of better restaurants is small, so plan on eating elsewhere, although some of the side streets offer good options. Security has improved greatly from the early and mid 2000s. If you prefer green areas, then walk along the section west of the Circuito Interior extending to the Periferico, which goes through Chapultepec Park. West of the Periferico, the street becomes more residential after the first few blocks (to Prado Norte), but is still tree shaded. This section is uphill and since you are a mile up from sea level, you will get a good workout. East of Av. Insurgentes, there are still some interesting buildings but more care needs to be taken in terms of personal security and a higher degree of alertness is suggested.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.