National Lighthouse Day 2025: Honoring Maritime History and Coastal Beacons Around the World

Every year on August 7th, the United States observes National Lighthouse Day, a time to honor the legacy, significance, and preservation of lighthouses across the country. These iconic coastal structures have guided sailors safely for centuries, and while many are now automated or decommissioned, they remain powerful symbols of maritime heritage and safety.

As we approach National Lighthouse Day 2025, there’s no better time to shine a spotlight on these enduring monuments and the people who built, maintained, and depended on them.

In this updated post, we’ll explore the history of National Lighthouse Day, how it’s celebrated in the U.S., and how the UK and other countries join in through events like International Lighthouse Heritage Weekend. Plus, we’ll connect you with even more maritime-themed observances and opportunities to dive into a career at sea.

Read more: How Modern Ships Navigate

Why Do We Celebrate National Lighthouse Day?

The roots of National Lighthouse Day trace back to August 7th, 1789, when the U.S. Congress passed an act to establish federal control over the nation’s lighthouses. This “Act for the Establishment and Support of Lighthouses, Beacons, Buoys, and Public Piers” laid the foundation for a safer and more standardized maritime navigation system in America.

Exactly 200 years later, in 1989, Congress officially designated August 7th as National Lighthouse Day in honor of this milestone. While the resolution was a one-time observance, it sparked an ongoing tradition embraced by lighthouse enthusiasts, historians, and maritime organizations alike.

Lighthouses are more than just functional structures—they are cultural landmarks, often built in remote and challenging environments, and manned by brave keepers whose stories are woven into local and national maritime lore.

Read more: What Do Lightships Do?

A Global Perspective: International Lighthouse Heritage Weekend

While National Lighthouse Day is uniquely American, lighthouse appreciation is a global affair. In the United Kingdom, lighthouse enthusiasts celebrate International Lighthouse Heritage Weekend (ILHW) on the third weekend of August, which in 2025 falls on August 16–17.

Organized by the Association of Lighthouse Keepers (ALK), ILHW invites the public to visit participating lighthouses and lightships across the UK. The weekend offers behind-the-scenes tours, historical exhibits, family-friendly activities, and opportunities to support conservation efforts.

ILHW coincides with the International Lighthouse and Lightship Weekend (ILLW), a radio event held in over 40 countries that promotes both lighthouse awareness and amateur radio communication.

These dual observances underline the importance of lighthouses beyond national borders. Whether you’re exploring a lighthouse in Cornwall, England or Maine, USA, the story remains universal: human ingenuity, coastal safety, and the call of the sea.

Read more: 15 Iconic Lighthouses Across the Globe You Must Visit

Fascinating Lighthouse Facts

• The oldest existing lighthouse in the world is the Tower of Hercules in Spain, dating back to the Roman Empire.

• The Pharos of Alexandria, one of the Seven Wonders of the Ancient World, was the first known lighthouse, built around 280 BC.

• The oldest U.S. lighthouse still in operation is Sandy Hook Light in New Jersey, first lit in 1764.

• Lighthouses have historically used a variety of light sources—from whale oil lamps to modern LED technology.

• Fresnel lenses, developed in the 1820s, revolutionized lighthouse effectiveness, allowing light to be seen from much farther away.

The History of Lighthouses

Lighthouses have a long history and, for very good reason, are a source of fascination for many. They may be a beacon of hope for seafarers across the ages, but they also capture the general public’s imagination - perhaps due to their unique structure and their power to make us imagine the rough seas and hardships sometimes encountered on a voyage.

Given that the world’s first lighthouse is agreed by historians to be the Lighthouse  of Alexandria in what is now modern-day Egypt, which was built in around 280 BC, it goes without saying that electricity has not always been the source of light for steering sailors to safety.

The lighthouse is also known as the Pharos of Alexandria, and was not only the world’s first recorded lighthouse, but the second tallest man-made structure at time, being beaten only by the pyramids of Giza. The lighthouse is said to have been in excess of 350 feet (110 meters) tall. It is also one of the seven ancient wonders of the world.

Meanwhile, the oldest existing lighthouse in the world is generally considered to be the Tower of Hercules in La Coruña harbor in north western Spain, which dates from the late 1st century A.D,

So that brings us back to electricity - or the lack of. So how did these ancient lighthouses manage to cast their beam through the darkness?

Originally, as in the case of the Lighthouse of Alexandria, fires were set at the top of the tower in order to create a light source. The burning of coal was also used, with oil lamps - often protected by glass and reflected as far as possible by polished metal or mirrors - subsequently taking the place of coal and fire.

However by the late 1800s in some parts of the world, electric lamps slowly became the norm, ushering in a whole new era of maritime navigation and the harnessing of electricity and the invention of the light bulb laid the foundation for the way lighthouses operate today.

Now, lighthouses are synonymous with a sweeping arc of light that throws beams across the darkened seas. In order to facilitate this rotating effect, glass and mirrors are strategically positioned to create maximum effect while a motor spins a curved mirror in a circle around the bulb.

And of course, technology and light aside, the other key component to a lighthouse is its sturdy construction. These beacons must be built to withstand extreme weather conditions including the crashing of waves and winds of any speed.

Add to the fact that lighthouses are located on coastlines, often perched on cliff tops or positioned offshore at the end of a promontory or on a cluster of rocks and it is clear why they must be robust enough to withstand anything Mother Nature can throw at them.

So it’s hats off to the construction workers who built Spain’s still-standing Tower of Hercules back in the first century AD!

Celebrating in 2025: Observing National Lighthouse Day?

Whether you’re in the U.S., the UK, or elsewhere, here are a few ways to mark National Lighthouse Day and International Lighthouse Heritage Weekend:

• Plan a Visit: Many lighthouses open their doors for guided tours or special events. It’s a great way to support historical preservation and learn about local maritime history.

• Join a Preservation Society: Organizations like the U.S. Lighthouse Society and ALK offer memberships that help fund ongoing restoration efforts.

• Share on Social Media: Use hashtags like #NationalLighthouseDay or #LighthouseWeekend to join the global conversation.

• Explore Maritime Careers: While lighthouse keeping is now automated, the maritime world still offers exciting job opportunities (more on this below).

• Teach the Next Generation: Lighthouses make engaging topics for educators, homeschoolers, and curious kids interested in history or engineering.

Related Observances in the Maritime Industry

There are several other international days that celebrate the maritime industry, its people, and its history. These include:

• World Marine Aids to Navigation Day – Celebrated annually on July 1st, this day highlights the importance of buoys, beacons, and yes—lighthouses—in modern marine navigation. Learn more in our post, A History of Buoys for World Marine Aids to Navigation Day.

• The Day of the Seafarer – Held each year on June 25th, this day honors the contributions of seafarers worldwide and is recognized by the International Maritime Organization (IMO).

• International Day for Women in Maritime – Observed on May 18th, this day highlights the achievements and ongoing challenges faced by women working in the maritime sector.

Interested in a Career at Sea?

Although lighthouse keepers are mostly a thing of the past, the maritime industry is very much alive and thriving. From deckhands and engineers to electricians and cooks, there are countless roles aboard modern ships.

If you’re curious about life at sea, be sure to check out:

• The Pros and Cons of Working in a Seafarer Job

• Seafarer job vacancies on Martide

At Martide, we connect qualified seafarers with top employers in the maritime industry —and help shipping companies simplify their crew management process with our powerful maritime recruitment and crew management software.

Final Thoughts: Preserving the Light

Whether towering along stormy coasts or nestled on rocky islands, lighthouses remain powerful reminders of our connection to the sea. They’ve saved lives, guided trade, and inspired countless works of art and literature. National Lighthouse Day and International Lighthouse Heritage Weekend are chances to reflect on their legacy—and to ensure they remain part of our shared cultural future.

So, this August, take some time to visit a lighthouse, share its story, or support its preservation. And if you’re looking to chart your own maritime path, we’re here to help.

Looking for a Job Working at Sea?

Sorry, we can’t place you in a lighthouse - but we can help you land your next seafarer contract. Browse our current vacancies here.

Post first published on 3 August 2023 and last updated 3rd August 2025