A 132-year-old telescope continues to keep watch over the night skies above Providence.

Since its original beginnings as a weather observatory mountaintop, this facility played an instrumental role in gathering atmospheric data for almost 100 years.

This Asian-inspired tower in a lush urban park provides spectacular panoramic views of Baltimore.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

Even though some of the buildings date back to the Victorian era, this research institute is still involved in cutting-edge astronomy research.

A space-grade telescope mirror lies discarded in the shrubs.

A cheeky name for an observatory visitor's center.

The oldest observatory in West Australia.

One of the largest refracting telescopes in the world, and the first built specifically for studying astrophysics.

Once the world's most modern observatory, this building is now a private school.

An impressive collection of massive radio satellites.

High in the Sacramento Mountains, a facility dedicated to studying the sun.