Dunsink Lane, Dublin 15, D15 XR2R


Please see our calendar below for a list of upcoming public events. Booking is required for all events through our Eventbrite platform. Tickets are usually released at least two weeks in advance of the event. Keep an eye on the calendar below and our social media for release updates!

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Hamilton Walk

October 16, 2023 @ 2:00 pm - 4:00 pm

On October 16th 1843, Sir. William Rowan Hamilton while walking into Dublin from Dunsink, realized that he could use a system with four dimensions, and this system would be useful for understanding rotations in three dimensions.  This system became known as Quaternions, and is widely used today in satellite navigation and computer graphics. He used his penknife to etch his equation into the bridge at Broombridge.

The Hamilton Walk is jointly organised by Maynooth University and DIAS annually, and on this walk we retrace Hamilton’s steps from the Observatory to the bridge to celebrate this mathematical leap. Advance booking is essential and places are extremely limited so book early, tickets are now available at!


Attendee Information

Visit here for information on how to get to Dunsink. There will be parking available on the Observatory grounds, accessed through our main gate on Dunsink Lane.

The route includes walking across a grassy field so please wear suitable shoes taking into account weather conditions on the day. It is an approximately 45 minute walk from the Observatory to Broome Bridge, see the map here for an idea of the route taken.


October 16, 2023
2:00 pm - 4:00 pm