Rainbow in Iceland

Photo: Moyan Brenn/Flickr

St. Patrick's Day is upon us, and for many, that means raucous parades, flowing kegs of beer, an overdose of green clothing and, of course, countless references to the ubiquitous pot of gold found at the end of the rainbow.

In honor of this hallowed Celtic holiday, here is a collection of rainbows captured across the globe, including the one above from Skogafoss, Iceland.

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Rainbow in Wilster, Germany

Photo: Christ Charisius/AFP/Getty Images

Wilster, Germany

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Rainbow in Te Anu, New Zealand

Photo: Paul Bica/Flickr

Te Anau, New Zealand

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Rainbow in Tokyo, Japan

Photo: Jiji Press/AFP/Getty Images

Tokyo, Japan

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Rainbow in Kinvara, Ireland

Photo: Eoin Gardiner/Flickr

Kinvara, Ireland

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Rainbow in Grassau, Germany

Lennart Preiss/Getty Images

Grassau, Germany

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Rainbow in Portland, PA

Photo: Nicholas A. Tonelli/Flickr

Portland, Pa.

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Rainbow in Niagara Falls

Photo: Diana Robinson/Flickr

Niagara Falls

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Rainbow in Inveraray, Scotland

Photo: Gianni Sarti/500px

Inveraray, Scotland

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Rainbow over windmills in France

Photo: Philippe Huguen/AFP/Getty Images

Lisbourg, France

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Catie Leary is a photo editor at Mother Nature Network. Follow her on Twitter and Google+.