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[bridge78]

Can you say "I spend my holidays on a farm"? Doesn't this mean you were on the roof??

[Rover_KE]

No, it doesn't.

'I spend my holidays on a farm' is what we normally say.

Rover

[SoothingDave]

Can you say "I spend my holidays on a farm"? Doesn't this mean you were on the roof??

"Farms" are large areas of land, not normally enclosed by a roof.

[emsr2d2]

If you said you spent the time "on a farmhouse", then it would be very confusing as it would sound like you spent time on the roof of the main farm building.