Your Dollars At Work

a banner stating "Use Fee Project, your entrance fee at work" hangs near the barricaded door to a room

Tabby Floor Replacement

The floors you walk on during your visit to the Castillo are a protective layer of tabby, placed above the historic floors. To ensure we preserve the historic, unexcavated floors below, as well as provide a safe walking surface for our more than 700,000 annual visitors, we are in the process of replacing several of the worn floors throughout the Castillo.

oyster shells sit in a muddy wheelbarrow

What is Tabby?

Tabby is a type of concrete, created by burning oyster shells to create lime, then mixing the lime with water, sand, ash, and broken shells. This material has been a common building material in St. Augustine for more than 300 years.Our park masons are using materials and skills similar to those used centuries ago as they preserve this fortress.

Park masons using historical techniques to make mortar/tabby.

NPS Photo


Select from the links listed below for information on specific projects:

Ticket Booth Expansion and Renovation

Covered Way Wall Preservation Project

Horizontal Surface Repair and Stabilization

For more information please e-mail us.

Last updated: June 23, 2020

Contact the Park

Mailing Address:

1 South Castillo Drive
Saint Augustine, FL 32084


(904) 829-6506

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