How big is the Planetarium No 1 dome, and does it hold a world record?
Planetarium No 1 in Saint Petersburg has the largest planetarium dome in the world — a projection dome 37 meters in diameter, around two meters wider than the Guinness-listed dome in Nagoya, Japan. It opened on 3 November 2017 inside a former gasholder of the 19th-century city gas works on the Obvodny Canal embankment. Its operators submitted applications to the Guinness Book of Records in 2019 (for the largest dome, highest resolution and brightest image); the dome's size is widely recognized as a world first.
The scale creates an immersive experience: visitors sit beneath a hemisphere of roughly 4,000 square meters onto which dozens of 8K projectors cast a combined image of around 100 million pixels, with no visible seams between projectors. The hall seats up to about 500 people, and on its busiest days the planetarium receives several thousand visitors. The effect is less like watching a screen and more like being suspended in deep space.
The dome doubles as a venue beyond astronomy shows: the round brick gasholder hosts full-dome films, lectures, and music and light concerts projected across the whole ceiling. That blend of 19th-century industrial architecture and one of the most advanced projection systems in the world is a large part of the appeal.
What shows and programs run at Planetarium No 1 in 2026?
Planetarium No 1 runs a rotating program of full-dome films and live shows in 2026, ranging from children's space adventures to astrophysics presentations for adults. Most shows are in Russian and last about 45–60 minutes, and sessions run throughout the day, with the first programs from around 10:00 and the last in the evening. Some materials are available in other languages — check the schedule when booking.
The repertoire generally mixes educational programs for school groups, family-friendly shows, science documentaries, and music or organ concerts projected onto the dome. Popular titles have included science films about space and the universe as well as themed shows for younger children. Because titles and times change through the year, the current repertoire and session schedule are listed on the official site, planetarium.one.
The venue also hosts special events such as concerts and themed evenings that use the full-dome projection. Programs and prices vary by session, so each show is listed individually with its own start time and ticket price rather than a single daily admission.
How much do Planetarium No 1 tickets cost and where to buy them?
Ticket prices at Planetarium No 1 depend on the program. In 2026, standard sessions start from roughly 400 rubles, with typical full-price tickets around 800 rubles; reduced rates apply for children, students and pensioners, and children under 3 enter free. Special concerts and premium shows can cost considerably more — up to around 2,500–2,900 rubles. Confirm the exact price for each show on planetarium.one.
Tickets can be bought on the official website, planetarium.one, or at the box office on site. Booking online in advance is sensible during the peak tourist season (roughly May to September) and on Russian school holidays, when popular sessions sell out. Payment methods include Russian bank cards and cash in rubles; foreign cards may not always be accepted, so carry some rubles as a backup.
| Ticket category | Price (₽) | Notes |
|---|---|---|
| Standard sessions from | ~400 | varies by show |
| Adult (typical full-price) | ~800 | standard full-dome show |
| Child / student / pensioner | reduced | concession rate, ID may be required |
| Child under 3 | Free | |
| Concerts & premium shows | up to ~2,500–2,900 | special programs |
Prices are indicative for 2026; the official site lists the exact price for each session.




