want to know what one of my favorite parts of boston is? the crossover/tunnel that allows you to get from copley place to the prudential shops. not only are you going from one load of superb stores to another load of fantastic stores, but you don't have to walk outside, you're essentially walking diagonal over the mass pike thus saving so much time, plus you go from orange line land to green line land in one fell swoop.
*note: i tried to nonchalantly take these photos with my phone while walking over the crossover. Hence why they're blurry and not straight.