Landmark National Bank Address: 5200 Broadway Ave, Great Bend, KS 67530 Phone: (620) 792-2196 Banks, Mortgages Other Businesses: Central National Bank at 4312 10th Street Pl, Great Bend, KS 67530 First Security Bank at 3907 Broadway Ave, Great Bend, KS 67530 First Kansas Bank at 4001 10th St, Great Bend, KS 67530-3435 American State Bank & Trust Co at 725 Mckinley St, Great Bend, KS 67530