The Castillo de San Marcos (St. Mark’s Castle) is the continental United States’ oldest masonry fort. It was designed by Spanish engineer Ignacio Daza and…
The U.S. Postal Service honors pioneering marine biologist Eugenie Clark (1922–2015) with the release of a new commemorative stamp. Affectionately known as the “Shark Lady,”…
Michigan’s Upper Peninsula is home to some of the most beautiful sights in the state. Rugged sandstone cliffs along the shoreline of Lake Superior are…
With this Priority Mail® stamp, the U.S. Postal Service celebrates Monument Valley, an iconic landscape of the American West. Reminiscent of a vintage travel poster,…
“Scooby-Doo, Where Are You!” For nearly 50 years, this call has summoned the beloved animated Great Dane wherever help is needed. The U.S. Postal Service, in…
Chien-Shiung Wu (May 31, 1912 – February 16, 1997) was a Chinese-American experimental physicist. She is best known for her work in nuclear physics and…
Like a burst of colorful confetti, is here to add an extra dash of fun and happiness to celebratory greeting cards, invitations, and gift-bearing envelopes…
In San Marino, California, the Huntington Desert Garden holds one of the world’s oldest and largest collections of cacti and other succulents. The garden was…