A lawn that suddenly drops at a retaining wall.
A barrier for vehicles or animals. Minimizes obstruction to view and allows pedestrian access.
What is a Ha-ha?
John Spacey, updated on July 16, 2016
A ha-ha is a lawn that suddenly drops at a low retaining wall. The wall isn't typically visible from the top of the lawn. As such, the term "ha-ha" stems from the surprise at finding a sudden drop as you approach from the top.Historically, large estates maintained lawns by allowing animals to graze. A ha-ha was just tall enough to discourage grazing animals from approaching a house. Modern landscapes may include ha-ha for security purposes, as they can prevent vehicles from approaching beyond the wall while minimizing visual obstruction. This can lend itself to other security landscaping techniques such as natural surveillance.
ArchitectureThis is the complete list of articles we have written about architecture.
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An overview of architecture with examples. A list of common architectural technologies.
An overview of night architecture.The difference between active and passive design. A definition of universal design with examples. The common types of passive lighting.
The common types of architectural acoustics.
An overview of parti pris in architecture with an example.
A definition of genius loci with examples.
An overview of massing in architecture.
A definition of compressive strength.A few common urban design terms.
The difference between a green wall and green facade.A list of sustainable urban design techniques. The difference between active and passive design.
How a street canyon changes an urban environment.A list of common city issues. A list of common community problems.
An a-z list of things in cities.An list of the common types of city.
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