We are proud to be located in the heart of Philadelphia, steps from City Hall, Reading Terminal Market, and a variety of public transportation options. 

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

Subway: 11th Street Station on the Market-Frankford line

Cesium, located in the heart of Philadelphia, PA, has been named one of Philadelphia's Best Places to Work in Tech, a startup to watch, and the winner of the 2020 PACT Enterprise Award for Technology Startup.

CesiumJS 1.88

Why Cesium

Our unique approach to advancing 3D geospatial technology

Open standards, open APIs, and open source software

An open specification for streaming massive 3D content

Customer and community applications powered by Cesium

Industry events where you can find the Cesium team 

The end-to-end platform for 3D geospatial

Tiling, 3D global content & hosting in the cloud

3D Tiling Pipeline

Enabling the 3D geospatial ecosystem in Unreal Engine

CesiumJS, Cesium Tiling Pipeline & Cesium ion SDK

Use Cases: Drones

Hands-on tutorials, API references & other documentation

Sandcastle, a live-coding app for CesiumJS examples

Slides, videos, and other Cesium presentation materials 

The fastest way to get answers from the community and team

Incredible Graphics Development in CesiumJS with GeoFS

Introduction to Cesium Stories

Create an Interactive 3D Presentation with Cesium Stories

Styling 3D Tiles

Visualizing Time Dynamic Data

Visualizing Time Dynamic Data with Cesium Stories

Set Location for Data Uploaded to Cesium ion

Set location for data uploaded to Cesium ion

Building Global Scenes with Georeferenced Sublevels

Build global scenes with georeferenced sublevels

Transition Between Locations on the Globe

Transition between locations on the globe

Build a Flight Tracker with Cesium for Unreal

Visualize a Proposed Building in a 3D City

Visit Cesium

Our office