• 14 parts
  • Checked September 2026

Parts of a Barn

A gambrel-roof dairy barn from outside, then cut across to show the hayloft and the stalls.

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Each numbered ring is a button. Use the arrow keys to move between them and Enter to choose. Names are read out in Study, and once a part is answered.

All 14 parts on the diagram

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Start here: 5 main parts 6

  1. Gambrel roof A roof with two slopes each side; it makes room for hay.
  2. Cupola A small structure on the ridge that lets stale air out.
  3. Sliding door A large door that hangs from a track and rolls aside.
  4. Silo A tall round tower that stores silage for feeding the cattle.
  5. Hayloft (haymow) The space under the roof where hay is stored.
  6. Stall The place where one animal stands, divided from the next.

The barn from outside 3

  1. Weathervane It swings to show which way the wind blows.
  2. Hay hood The ridge carried past the wall, sheltering the loft door and pulley.
  3. Lean-to An addition with a single-slope roof leaning on the barn wall.

The barn cut across 5

  1. Hay carrier A trolley on a track under the ridge that lifts hay.
  2. Stanchion An upright frame that closes round a cow's neck to hold her.
  3. Manger The trough in front of the stall that holds the feed.
  4. Feed alley The walkway between the mangers; feed is wheeled along it.
  5. Gutter A channel in the floor behind the stalls that catches manure.

How this list was compiled: Read 2026-09-30; a name is kept only where two of these use it. (1) Michael J. Auer, The Preservation of Historic Barns, Preservation Brief 20, US National Park Service, https://www.nps.gov/orgs/1739/upload/preservation-brief-20-barns.pdf : gambrel roof and the haymow it enlarged, hayloft, cupolas, weathervanes, silos, stalls, stanchions. (2) US Department of Agriculture, Farmers' Bulletin 1342, Dairy-Barn Construction (1923), https://archive.org/details/CAT87202848 : a plank-frame barn with a gambrel roof; cow stalls, stanchions, mangers and gutters; the old-style slatted cupola as a ventilator; the silo. (3) Radford's Practical Barn Plans (1909), https://archive.org/details/cu31924055507333 : gambrel roofs, hay mow, the hay carrier and hay fork tracks, sliding doors, feed alley, mangers, the gutter, stanchions, silos, lean-to. (4) A barn equipment maker's book (1914), https://archive.org/details/cu31924051998809 , for names only: feed alley, sliding doors, weather vane, hay carrier track. (5) Samantha Johnson, Old Barns in America: A Field Guide, Hobby Farms, https://www.hobbyfarms.com/old-barns-in-america-a-field-guide/ : hay hoods (also widows' peaks, crows' beaks) on gambrel barns; cupolas for ventilation. (6) Wikipedia: Gambrel (two slopes each side, the lower steeper), Hay hood (a roof extension projecting from the ridge, sheltering the door used for passing hay into the loft; a hay carrier lifts and moves the hay), Barn (the mow or hayloft; stalls; the silo; the hay track and its trolley), Cupola (barns often have cupolas for ventilation), Silo, Hayloft, Lean-to (rafters leaning against another wall), Weather vane, Manger, Stanchion. Licence: own work

The drawing: Drawn for this site on 2026-09-30 from plain geometry; nothing traced. Licence: own work

How it works

This is the barn in the picture books: a two-story dairy barn with hay above and cows below. Tap a part to see its name, or press Quiz me.

Read the full guide

Outside

The gambrel roof has two slopes on each side, which leaves more room for hay under it. A cupola on the ridge lets stale air out, and a weathervane often stands on top. The hay hood at the peak shelters the loft door. A sliding door opens at ground level, a lean-to adds a low shed along one wall, and the silo stores silage.

Inside

Hay is kept in the hayloft, also called the haymow. A hay carrier on a track under the ridge lifts it in. Below, each cow stands in a stall with her neck in a stanchion and eats from the manger. Feed comes down the feed alley, and a gutter runs behind the stalls.

  • Hayloft, haymow and mow all name the same space. Mow rhymes with cow.

Questions and answers

What are the parts of a barn called?

Outside: the gambrel roof, cupola, weathervane, hay hood, sliding door, lean-to and silo. Inside: the hayloft above, with its hay carrier, and the stable below, with stalls, stanchions, mangers, a feed alley and gutters.

What is the top of a barn called?

The roof that has two slopes a side is a gambrel roof. The small slatted structure on its ridge is a cupola, and the space under the roof, where hay is stored, is the hayloft or haymow.

What is the point on the front of a barn roof called?

A hay hood. The ridge is carried out past the gable wall to shelter the loft door and the pulley or track used to lift hay. It is also called a hay bonnet, crow's beak or widow's peak.

What is a stanchion in a barn?

An upright frame at the front of a stall that closes loosely round a cow's neck. It keeps her in place while she eats from the manger or is milked, and she can still stand up and lie down.