Overview
A single Neolithic mound at Knowth carries roughly a third of all the megalithic art in Western Europe – more than 200 carved stones ringing the base and lining the two passages inside. That is the reason to come. The mound sits on a gentle rise beside a bend in the River Boyne, about 9 km west of Drogheda and a 45-minute drive north of Dublin, measuring roughly 80 m east–west and 95 m north–south, ringed by 127 kerbstones. Two independent passages run east–west through the interior, each ending in its own burial chamber.
The site forms part of the Brú na Bóinne archaeological landscape, a UNESCO World Heritage area that also takes in Newgrange and Dowth. One thing to be clear about before you go: you don’t get inside the chambers at Knowth. To protect the fragile stonework, the interior is closed, so the visit is the exterior pathways, the carved kerbstones, a climb onto the summit viewing platform, and the exhibition back at the Brú na Bóinne Visitor Centre. If it’s a chamber you want to stand in, that’s Newgrange; Knowth is the one for the art and the view.
History & Significance
Neolithic origins (c. 3200 BC)
Construction at Knowth dates to around 3200 BC, placing it in the same era as the other major Boyne Valley tombs. Building the mound required moving thousands of tonnes of earth and carefully positioning massive greywacke stones quarried from the Clogherhead area, roughly 20 km away. The eastern passage stretches about 40 m – making it the longest known megalithic corridor in Western Europe – and ends in a cruciform chamber with three side recesses. The western passage measures approximately 34 m and terminates in a narrower chamber that originally contained a stone basin.
The art of the stones
Excavations during the 1960s and 1970s revealed over 200 decorated stones, a record for any prehistoric site in Western Europe. The carvings feature spirals, lozenges, concentric circles, and serpent-like patterns. One orthostat even bears what researchers consider the oldest known illustration of the moon. Many designs are deliberately placed on the rear faces of the kerbstones, pointing to a tradition of “hidden art” that may have held ritual or seasonal significance.
Later centuries
After the Neolithic period, the mound gradually fell into disuse. By the Bronze Age, the entrances were deliberately sealed, and the site lay quiet for centuries. In the late Iron Age and early Christian era, Knowth was repurposed as a hill-fort, with defensive ditches cut into the mound’s base and summit. Early Christian graffiti and Ogham inscriptions were later carved into the eastern chamber stones. The site eventually served as a Norman motte in the 12th century and later as a grange for Mellifont Abbey. The state acquired the land in 1939, beginning a long process of archaeological investigation and public presentation.
What to See & Do
- The Great Mound & Kerbstones – Walk the paved perimeter to examine the 127 standing stones. Many still display intricate petroglyphs, best viewed with the provided guide map.
- Twin Passages – Your guide marks the two entrances and explains how Neolithic builders roofed corridors nearly 5,000 years ago. The east–west passages were probably laid out with the equinoxes in mind, but later damage and the destruction of the original entrances mean the alignment no longer works – don’t expect a Newgrange-style shaft of sunlight.
- Interpretive Exhibition – The visitor centre houses replica stones, interactive displays, and a documentary on the original excavations, including the analysis of the carved lunar map.
- White Quartz Facade – Near the western entrance, a scatter of white quartz lies on the ground, remnants of the original facing that would have caught the morning sun.
- Satellite Tombs – Seventeen smaller tombs surround the main mound. Though many are now low earthworks, they outline a wide ceremonial landscape that once spread across the valley.
- Summit Views – The 12 m high viewing platform gives sweeping panoramas of the Boyne Valley, including clear sightlines to the Hill of Tara and the ancient course of the Boyne.
Photography Tips
- Early Light – The western quartz scatter glows in the morning sun. Book the first tour slot to catch it before the light shifts.
- Kerbstone Carvings – The engraved kerbstones read best in raking light, when low sun throws the spirals and lozenges into relief. Overcast days flatten them.
- Wide-Angle Landscapes – From the summit platform, a wide lens captures the curve of the Boyne and the surrounding farmland, framing the mound within its original setting.
Practical Information
Opening hours & tickets
All visits to Knowth begin at the Brú na Bóinne Visitor Centre – don’t drive to the monument itself. The visitor centre is open year-round (closed 24–27 December and 1 January), but the guided tour out to Knowth runs only from 1 March to 1 November, and there is just one Knowth tour a day.
Visitor Centre hours:
- January, February: 09:00–16:15
- March, April: 09:30–16:45
- May–August: 09:00–17:45
- September: 09:00–17:15
- October, November, December: 09:00–16:15
Tickets are strictly limited and must be booked online in advance. The booking window opens 30 days ahead from 1 April to 1 November, and 7 days ahead the rest of the year; with only one Knowth tour a day, popular dates go fast. Prices below were correct at the time of writing – always check the official site before booking.
- Knowth Tour + Exhibition: €10 adult, €8 senior, €5 child (12–17), free under 12, €5 student, €25 family.
- Visitor Centre Exhibition only: €5 adult, €4 senior, €3 child, free under 12, €3 student, €13 family.
- Combined Newgrange + Knowth Tour: €18 adult, €16 senior, €12 child (12–17), free under 12, €12 student, €48 family. Book via the official portal: https://brunaboinne.admit-one.eu/
Getting there
- By car: Take the M1 north from Dublin and exit at Junction 9 (Donore). Follow signs to the Brú na Bóinne Visitor Centre (Eircode A92 EH5C). The drive takes approximately 45 minutes. Free parking is available on site.
- By public transport: Bus 163 connects Drogheda (with onward links to Dublin) to the Visitor Centre. Services run several times daily, with the final departure timed before the last tour slot.
- On-site transit: A shuttle bus runs visitors from the exhibition centre out to the Knowth monument and back. Between the exhibition, the shuttle and the guided walk, budget three to four hours for the whole visit rather than a quick in-and-out.
Accessibility
The exhibition building and its facilities are fully wheelchair-accessible. The monument grounds feature gravel and uneven terrain, meaning access to the summit platform and lower pathways may be restricted for some mobility aids. Contact brunaboinne@opw.ie when booking to arrange specific assistance or discuss alternative viewing options.
Contact & additional details
- Phone: +353 41 988 0300
- Email: brunaboinne@opw.ie
- Official website: https://heritageireland.ie/visit/places-to-visit/bru-na-boinne-visitor-centre-newgrange-and-knowth/
Nearby Attractions
The Boyne Valley packs a high concentration of historic sites within a short drive. Pair Knowth with the Hill of Tara (about 17 km away), Ireland’s legendary seat of the High Kings, and the Dowth passage tomb for a different take on Neolithic engineering; the medieval ruins of Mellifont Abbey and the walled town of Drogheda add the later chapters. One practical thing worth repeating: with a single Knowth tour a day and tickets that sell out, book online the moment the 30-day window opens for your date.