From National Monuments

Castillo de San Marcos National Monument

Know Before You Go

Designation
National Monument
State
FL
Park address
Saint Augustine, FL
Entrance fee
Per person: $15.00; Park annual pass: $45.00NPS data as of 2026-08-25
Check current conditions on the official NPS site

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Notes

  • Designation Date: 10/15/1924

  • Built by the Spanish in St. Augustine to defend Florida and the Atlantic trade route, Castillo de San Marcos National Monument preserves the oldest masonry fortification in the continental United States and interprets more than 450 years of cultural intersections.

Tags

National Monuments