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Borealis at Guildhall Yard

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Green, red and blue lights illuminate the sky at night, with a crowd of people below.
Borealis presented by GDIF (FESTIVAL.ORG). Image courtesy of FESTIVAL.ORG.
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Experience mesmerising light installation Borealis, for free, at Guildhall Yard this December.
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Be amazed by a one-of-a-kind light installation inspired by the Northern Lights, as Borealis lights up the skies over Guildhall Yard in the City of London.

What is Borealis?

Blue and green lights illuminating the clouds above Greenwich at night, with a crowd of people and the silhouette of a statue below.

This unique work from Dan Acher takes over the historic space for 12 nights, having wowed the crowds during London’s Greenwich+Docklands International Festival earlier in 2021.

Become immersed in the free-to-view installation as multicoloured lights cloak and intermingle with the space, mimicking the movement of the natural Aurora Borealis phenomenon.

Grab selfies and photos to wow those back home or simply stop and take in the experience with this spellbinding spectacle in London.

Acher’s work uses beams of light travelling through particle clouds to create the illusion, matching these visuals with a tranquil soundtrack.

Borealis is produced by FESTIVAL.ORG and presented by the City of London Corporation in partnership with the Mayor of London, as part of the Winter Lights season of the Mayor of London’s Let’s Do London campaign.

When is Borealis taking place?

Borealis takes place every evening from 11 to 22 December, from 5.30pm until 10pm. Last entry is at 9.30pm.

Do I need tickets for Borealis?

Advanced booking for this event has now sold out, but please check for returned tickets.

Walk-up spaces are available throughout each evening and do not require a ticket. First admission from the walk-up queue is at 5.45pm.

Please be prepared to queue and understand that admission is only guaranteed by pre-booking.

Borealis is a free-to-attend event.

Where is Borealis?

Two people take a selfie during Borealis, with strips of green, red and purple light and an illuminated mist in the background.

See Borealis in Guildhall Yard, in the City.

The nearest Underground stations are St Paul’s, Bank and Mansion House, which are all within a 10-minute walk. Mainline stations London Cannon Street, Moorgate and London Liverpool Street are also within 10 minutes of the venue.

What can I do before and after seeing Borealis?

Food and drink options are available to buy at the event from The Wine Tap Van, serving mulled wine, hot cider, festival cocktails and much more. Hot chocolate and mince pies are also available.

There are also lots of things to do in the City before or after experiencing Borealis, from historic attractions to shopping and dining.

Check out the nearby Guildhall Art Gallery and Roman Amphitheatre, which combines world-class artworks with the ruins of a theatre that once hosted gladiatorial contests. Visit St Paul’s Cathedral, where you wander beneath the famous dome. Or discover an ancient temple, the London Mithraeum.

If you’re keen to do some Christmas shopping, One New Change is a short walk away and offers a range of big name brands; while The Royal Exchange features high-end boutiques in a charming setting.

Warm up with a drink or dinner at one of the many restaurants and bars nearby. The Ned houses six eateries and bars, including health-conscious Malibu Kitchen; stylish Coq d’Argent mixes modern French food with panoramic views; and Madison boasts unique views of St Paul’s Cathedral from its roof terrace.

Find more things to do in the City.

Blue, green and pink lights illuminate the skies at night above London's skyline, with skyscrapers lit up in the background, and a crowd of people in the foreground.

Need to know:

Entry information

  • Timeslots are available every 30 minutes.
  • This event is outdoors. Please dress appropriately.
  • Toilets are provided for audiences on site.
  • Dogs and pets are not permitted on site, with the exception of assistance dogs or service animals.
  • Bikes are not permitted inside the installation; however, you are encouraged to cycle wherever possible. View an interactive map listing all secure bike parking near Guildhall Yard.

Photographers and film makers will be at this event to capture footage to share online, with our partner organisations and for use in future promotions. If you don’t want to be featured, please wear a "No Photography" sticker, available from the Box Office. Have you got some great snaps you want to share? Tag @festivaldotorg and use #Borealis.


FESTIVAL.ORG is committed to providing an inclusive event. It is providing:

  • Full level access
  • Accessible toilet
  • Digital audio description
  • Easy-read information: Photo route and visual guide
  • Induction loop at Box Office
  • Chairs are available

Find more information and download these resources in advance.

If you have any further questions about access, please email [email protected] with the subject header "ACCESS".

Health and safety guidance

Please respect fellow audience members’ space, the event guidelines, and look out for one another.

FESTIVAL.ORG has undertaken comprehensive risk assessments and reviewed its policies regularly in response to the Covid-19 pandemic. Staff are testing regularly and adhering to government guidance.  

You can help make sure everyone has a great experience at Borealis by:

  • Not attending the event if you have experienced Covid-19 symptoms within the last 14 days or are supposed to be self-isolating.
  • Wearing a face covering in crowded areas, unless you are exempt.
  • Respecting others’ personal space and comfort zones, including in accessible areas.
  • Using the hand sanitisers provided.
  • Being mindful of sightlines at busy times.
  • Following any further instructions from event staff and security team.

Please let a member of the event team know if you require any assistance on site.

Find more information on government guidance regarding Coronavirus.

Bag searches may be in place; please cooperate with the security and stewarding team.

If you have any further questions, please contact the Box Office on +44 (0)7341 953 998.

Sponsored content in partnership with the City of London Corporation.

Venue Details & Map

Guildhall Yard


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