Get Directions Niobrara Museum - Memories of Old Niobrara Get Directions 89054 519th Ave Niobrara, NE 68760 Phone: (402) 857-3455 About Featuring artifacts from the Niobrara area including a scale model of old Niobrara's 1956 Main Street. Open Memorial Day-Labor Day, Sat, 10am-3pm; Sun, 1-3pm or by appt. Free. 402-857-3546