The Portal to the Heritage of Astronomy is a must-see resource for readers interested in stars, space, and the history of how different cultures interpret the night sky. This resource exists to highlight important astronomy information, promote support of astronomical heritage site conservation, and provide research tools. Those less familiar with astronomical heritage may want to begin on the About page, which answers many pertinent questions, including "What is astronomical heritage?" As this page notes, astronomical heritage deals with "evidence relating to the practice of astronomy and to social uses and representations of astronomy." On the Themes page, the Portal includes a collection of essays that explore connections to the sky across many places and periods. Those interested in exploring heritage sites can do so using an interactive Astronomical Heritage Finder map (found under The Heritage tab). Readers will also find case studies exploring the features and preservation of notable astronomical sites on The Heritage page or by following the "Full case studies" link on the Home page. These case studies incorporate research on many related topics such as discussing tangible versus intangible heritage and light pollution. The Portal is a collaboration between UNESCO, the World Heritage Center, and the International Astronomical Union. Clive Ruggles, a professor of archaeoastronomy at the University of Leicester, serves as Project Director, with assistance from other team members and advisors around the world.