Architecture made of coquina- 3. The Tarragona Tower (a.k.a. Tarragona Arch or Tarragona Castle) was built from local coquina rock of irregular shapes (all of the rock used was quarried from the nearby Tomoka quarry. The structure’s design was inspired by an octagonal medieval tower and arches located in Tarragona, Spain. Its construction was completed in 1925- Daytona Beach, FL.