Essential Information

Type Family fun
Date and Times Weekends and select holiday weekdays | 11am - 2:30pm
Prices Free with admission to the Observatory
Royal Observatory

Observatory Unlocked

Enjoy a range of public talks and activities delivered by our Observatory Explainers, ranging from talks on the hidden stories of the Royal Observatory Greenwich to Solar Observing and hands-on science demonstrations.

Our team of Observatory Explainers include those who are studying Astrophysics at degree or postgraduate level and can answer your burning questions about astronomy, from the origins of the Universe to the methods astronomers use to study the distant stars.

This activity is included in the price of admission to the Royal Observatory.

Book your tickets

Age: 7+

Choose your tickets

Observatory Unlocked is free with admission to the Royal Observatory.

A father and son play on the Prime Meridian Line outside the historic Flamsteed House building of the Royal Observatory

Royal Observatory

  • Guaranteed entry time
  • Audio guide included
  • Planetarium shows not included
Adult £16
Child £8
A brother and sister with their back to the camera look out from the viewpoint at the top of Greenwich Park towards historic Greenwich

Royal Museums Greenwich Day Pass

  • Cutty Sark
  • Royal Observatory
  • Guaranteed entry time
Adult £24.80
Child £12.40
National Maritime Museum

Become a Member

  • Unlimited entry all year
  • Royal Observatory
  • Cutty Sark
  • Planetarium Shows
  • Special exhibitions
Direct Debit One-off
Individual: £50 Individual: £60
Family: from £65 Family: from £75