Perched atop the wooded summit of Balgay Hill in Dundee, Mills Observatory is a remarkable window to the cosmos and a treasured part of the city’s cultural and scientific heritage. Opened in 1935, it is the UK’s oldest purpose-built public observatory and one of the few of its kind in the country that remains open and free to the public. With its distinctive dome, historical instruments, planetarium, and panoramic views over the River Tay, Mills continues to inspire wonder in visitors of all ages.

​

Since opening its doors, Mills Observatory has welcomed generations of curious minds, from amateur astronomers and schoolchildren to world-renowned scientists. It has hosted special viewings of astronomical events such as lunar and solar eclipses, planetary alignments, and even the Apollo Moon landings, while fostering the development of Dundee’s vibrant amateur astronomy community.

​

The observatory houses a historic 10-inch Cooke refractor telescope—once praised by the British Astronomical Association—as well as a planetarium and regularly updated exhibitions. It offers a year-round programme of events, talks, and educational activities, making it a hub of science learning and public engagement.

​

This past season, Mills has experienced a powerful resurgence. Faced with the threat of closure in early 2024 due to budget cuts, the observatory saw overwhelming public support and record-breaking visitor numbers, with over 14,000 people attending during the 2024–25 season. It was ultimately saved thanks to grassroots campaigns, civic advocacy, and investment from space-tech firm STAR-Dundee as well as Culture & Business Scotland, securing its future for years to come.

​

Now approaching its 90th anniversary, Mills Observatory continues to look forward as well as upward. With new funding for interactive upgrades and a renewed focus on accessibility and education, Mills remains a beacon of inspiration—connecting Dundee to the stars, and the stars to Dundee.