Florida Keys National Marine Sanctuary Building

Overview

This is the Upper Keys administrative office of the Florida Keys National Marine Sanctuary, set at Mile Marker 95 on the southbound side of the Overseas Highway in Key Largo. It’s a working operations hub for boats and buoy work—not a public visitor center.

What You’ll (and won’t) find

• A two‑story NOAA facility that supports vessel maintenance and sanctuary operations.
• No advertised exhibits, trip booking, or traveler services. Treat it as a landmark, not a stop.

Better nearby stops

• For exhibits and a true visitor experience, head to the Florida Keys Eco‑Discovery Center in Key West.
• For restrooms, maps, and launching reef trips in the Upper Keys, use John Pennekamp Coral Reef State Park in Key Largo.

Sanctuary context (useful to know as you drive U.S. 1)

• You’re traveling through waters protected since 1990, home to North America’s only coral barrier reef, vast seagrass beds, mangroves, shipwrecks, and 6,000+ marine species.
• Follow sanctuary etiquette: book with permitted operators, use mooring buoys, and never touch or collect coral.

Should you stop?

Skip it unless you simply need a visual check of your mile marker. If you want education, restrooms, or a reef trip, the alternatives above are the right move.

Best time to visit

There’s no reason to time a visit to this office. If you’re planning water time, mornings typically bring calmer conditions; book snorkel or dive boats early and let the operators handle sanctuary rules.