You can watch your city’s trains move around in real time with this fun piece of wall art

Metroboard is an interactive artwork that tracks real-time train data and displays it on your wall.

Places are like people: They’re hard to really know. Sure, you can dine at all of a city’s most revered restaurants and amass a gallery’s worth of photos at its most iconic landmarks, but how do you get to know its soul? For Kirill Safin and Emily Perkins, cofounders of the Los Angeles-based studio Design Rules Company, the answer is easy: Descend to its underbelly, where a metal beast of a train roars below its neighborhoods...