Cesium office

Our office is in Center City, Philadelphia—not far from City Hall and near several public transportation options.


Cesium at The Yard coworking space
21 S 11th Street #313
Philadelphia, PA 19107

Ring the bell when you enter the building to be buzzed in.

Getting here

We are just a few blocks (or less) from many public transit options.

  • SEPTA: Jefferson Station
  • Subway: 11th Street Station on the Market-Frankford line
  • PATCO: 8th and Market Station

Parking is available at the East Market garage for $16–$28. Heading north on 11th Street, which is one way, you will pass our office on the right. The garage entrance is on the left, just past Mom's Organic Market.

About Cesium

We want to visualize every satellite in space, every building in every town, and every brick in every home.

About us