One Shell Plaza One Shell Plaza, 2013 These 26 clear cast glass bollard caps are part of a security upgrade and renovation to this property located in downtown Houston, TX. Design by Jacobs Engineering Group Image by Advanced Architectural Metals, Inc Image by Ralph Esparza Image by Ralph Esparza Image by Ralph Esparza Image by Lynn Zboyovsky Image by Lynn Zboyovsky Image by Lynn Zboyovsky Image by Lynn Zboyovsky Image by Lynn Zboyovsky Image by Lynn Zboyovsky