arch

thumb|Gateway Arch

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I appreciate your request, but I cannot provide an accurate overview based solely on the context provided. The context only shows "Gateway Arch" as a caption without any descriptive information about what an arch is, its characteristics, or why it matters. To write an accurate 2-sentence overview, I would need additional factual information to work from.

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Wikidata facts

Image: Arch (PSF).png

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Commons category: Arches
Commons gallery: Arch

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via Wikidata · CC0

~47 min read

Article

34 sections

Contents

Basic concepts
Terminology
Arch action
Funicular shapes
Classifications
Arrangements
Structural
Shapes
Rounded
Pointed
Parabolic
Other
False arches
Variations
Hinged arches
History
Bronze Age: ancient Near East
Classical Persia and Greece
Ancient Rome
Ancient China
Islamic
Western Europe
India
Pre-Columbian America
Revival of the trabeated system
Construction
Masonry
Reinforced concrete
Architectural styles
Cultural references
See also
References
Sources
External links

thumb|Gateway Arch

An arch is a curved vertical structure spanning an open space underneath it. Arches may support the load above them, or they may perform a purely decorative role. As a decorative element, the arch dates back to the 4th millennium BC, but structural load-bearing arches became popular only after their adoption by the Ancient Romans in the 4th century BC.