Pericat hybrid azaleas (Mrs. Fisher), Rhododendron (Ericaceae), New York Botanical Garden; New York City, New York, United States of America PacificStock
Long exposure photograph showcasing the many color combinations the Big Wheel produces at night; Seattle, Washington, United States of America PacificStock
Scenic view of landscape near Palmer, Alaska, with Fireweed (Epilobium angustifolium) in the foreground, Southcentral Alaska, summer PacificStock
A swallowtail butterfly seeks nectar on a butterfly bush; Astoria, Oregon, United States of America PacificStock
Celebrations of the international student congress Bordeaux 1907 by Leonetto Cappiello IStockHistory com