Smithsonian Day

Smithsonian Day is dedicated to the Smithsonian Institution, one of the world’s largest museum, education, and research complexes. Observed annually on September 18, the day encourages people to explore museums, exhibitions, scientific collections, history, art, culture, and discovery.

History of Smithsonian Day

The Smithsonian Institution was established in 1846 through an act of the United States Congress. It was created using a bequest from British scientist James Smithson, who left his estate to the United States to found an institution for the “increase and diffusion of knowledge.”

The Smithsonian’s first building, known as the Castle, was completed in the mid-19th century and became the institution’s original home. Over time, the Smithsonian expanded into a major center for research, education, preservation, and public learning.

Today, the Smithsonian includes museums, galleries, research centers, and the National Zoo. Its collections contain millions of objects, specimens, artworks, documents, and cultural treasures connected with science, history, nature, technology, and human creativity.

Interesting Facts About Smithsonian Day

• The Smithsonian Institution was established in 1846.
• James Smithson never visited the United States, but his bequest helped create the institution.
• The Smithsonian is often called the “nation’s attic” because of its vast collections.
• Most Smithsonian museums in Washington, D.C., offer free admission.

How Smithsonian Day Is Observed

Smithsonian Day is observed by visiting museums, exploring exhibitions, reading about the institution’s research, or using online Smithsonian resources. Visitors can learn about art, aviation, natural history, American history, culture, science, and many other subjects.

You can also take part by sharing favorite museum experiences, watching educational videos, exploring digital collections, or encouraging children and students to learn through museums and cultural institutions.

When Is Smithsonian Day in 2026?

Smithsonian Day is observed annually on September 18.

Observations