Doggy School (Parque de España, Mexico City)

Dogs are a big deal in Mexico City, and folks who live near the Parque de España like their pooches well trained. A trainer takes one dog at a time for a lesson in heeling while the other students wait their turn.

Bus Stop in Black & White (West Hollywood, Los Angeles)

A very cool series of sculptures by Yi Hwan Kwon called "Bus Stop" just outside the West Hollywood Park. No matter what angle you look at them from, they look two-dimensional, and yet they're not.