Machicolation
In medieval fortifications, machicolations (derivation French: machicoulis) are openings in the upper sections of castles or other fortifications through which missiles, boiling oil and other objects could be thrown down onto attackers. The openings could be in either the vertical plane or in the floor.
In Italy they are known as ‘piombatoio’, in France ‘meurtriers’, and in England ‘murder holes’ and ‘drop boxes'.
They originated in Syria but the idea was transplanted to Europe by returning Crusaders. One of the earliest examples dates from the 13th century and can still be seen at Chateau de Farcheville, near Paris. Since the Medieval period they have been mostly restricted to decorative purposes.
The openings, usually as narrow as possible to minimise the chances of arrows hitting defenders, usually occur where a parapet extends outwards on corbels so as to project from the face of the wall; this gave the defenders a better top view of assailants and allowed more accuracy in dropping rocks and boiling liquids down onto their heads. Either to deceive the enemy or for aesthetics – or both – a parapet might have been extended outwards on corbels even if there were no machicolations behind.
Machicolations were best located above critical points, such as gateways and entrances but could also form a continuous line extending around a castle. They were common in French castles but in their UK counterparts were usually restricted to the areas above gateways, eg Conwy Castle, Wales, built 1283-1289.
[edit] Related articles on Designing Buildings
- Archaeology.
- Britain's historic paving.
- British Museum.
- Building a Crossing Tower: a design for Rouen Cathedral of 1516.
- Cathedral of Brasilia.
- Cologne Cathedral.
- Conservation.
- IHBC articles.
- Palace of Westminster.
- St Pauls Cathedral.
- St. Basil's Cathedral.
- The Institute of Historic Building Conservation.
IHBC NewsBlog
Three reasons not to demolish Edinburgh’s Argyle House
Should 'Edinburgh's ugliest building' be saved?
IHBC’s 2025 Parliamentary Briefing...from Crafts in Crisis to Rubbish Retrofit
IHBC launches research-led ‘5 Commitments to Help Heritage Skills in Conservation’
How RDSAP 10.2 impacts EPC assessments in traditional buildings
Energy performance certificates (EPCs) tell us how energy efficient our buildings are, but the way these certificates are generated has changed.
700-year-old church tower suspended 45ft
The London church is part of a 'never seen before feat of engineering'.
The historic Old War Office (OWO) has undergone a remarkable transformation
The Grade II* listed neo-Baroque landmark in central London is an example of adaptive reuse in architecture, where heritage meets modern sophistication.
West Midlands Heritage Careers Fair 2025
Join the West Midlands Historic Buildings Trust on 13 October 2025, from 10.00am.
Former carpark and shopping centre to be transformed into new homes
Transformation to be a UK first.
Canada is losing its churches…
Can communities afford to let that happen?
131 derelict buildings recorded in Dublin city
It has increased 80% in the past four years.
Fate of historic Glasgow Vogue cinema decided after appeal
A decision has been made on whether or not it will be demolished.















Comments