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Join the Usk Astronomical Society with their state-of-the-art planetarium, for a fascinating and fully immersive trip around the solar system.  

Be amazed by the view of the Milky Way and constellations from outer space. 

Event suitable for all ages 5 years and older.  

Shows held at 10:30, 11:15, 12:00, 13:15, 14:00, 14:45.
Please book online to reserve your space, even though tickets for the planetarium are included in the admission price.   

The planetarium will be upstairs in the house, so is accessed via a staircase. 

N.B. You do not need to book if you wish to visit the site on these dates but do not wish to visit the planetarium.


Event times

Day Times
Thu 06 Aug 2026
10:30 - 16:15
Thu 13 Aug 2026
10:30 - 16:15
Thu 20 Aug 2026
10:30 - 16:15
Thu 27 Aug 2026
10:30 - 16:15
Book
Admission prices
Category Price
Members - Join now
Free
Adult
£10.90
Family (2 adults & up to 3 children)
£34.90
Family (1 adult & up to 3 children)
£24.00
Disabled person and companion
Free
Juniors (Aged 5-17) / Students*
£7.60
Seniors (Aged 65+)
£9.80

Cadw £1 ticket – for those on Universal Credit and other named benefits 

All children under 5 receive free entry.

*Student photo ID card is required to be shown on entry

Blue Light Card holders and HM Armed Forces & Veterans receive 10% off individual admission (not available online).

For full site information, including seasonal opening times and facilities, please visit the Tretower Court and Castle monument page.