Get Directions World's Largest Time Capsule Get Directions 318 Hillcrest Dr Seward, NE 68434 Phone: (402) 643-4189 About A 45-ton, 20 x 8 x 6-foot concrete vault filled with some 5,000 relics, remembrances and reminders. Dedicated on July 4, 1975, the brainchild of the late Seward writer and historian Harold Davisson is scheduled to open in 2025.