The resources wood, clay and iron are stored in the Great Warehouse. By upgrading the level of the Great Warehouse, you increase your resource storage capacity to store three times as much resources than in the regular one.
After one Great Warehous reaches level 20, you are then able to place additional Great Warehouse on open building slots.
Requirements: Main Building Level 10, Wonder of the World village
Construction Costs
| Level |  Wood |  Clay |  Iron |  Crop |  Total Pop |
| 1 | 650 | 800 | 450 | 200 | 1 |
| 2 | 830 | 1025 | 575 | 255 | 1 |
| 3 | 1065 | 1310 | 735 | 330 | 1 |
| 4 | 1365 | 1680 | 945 | 420 | 1 |
| 5 | 1745 | 2145 | 1210 | 535 | 1 |
| 6 | 2235 | 2750 | 1545 | 685 | 1 |
| 7 | 2860 | 3520 | 1980 | 880 | 1 |
| 8 | 3660 | 4505 | 2535 | 1125 | 1 |
| 9 | 4685 | 5765 | 3245 | 1440 | 1 |
| 10 | 5995 | 7380 | 4150 | 1845 | 1 |
| 11 | 7675 | 9445 | 5315 | 2360 | 2 |
| 12 | 9825 | 12090 | 6800 | 3020 | 2 |
| 13 | 12575 | 15475 | 8705 | 3870 | 2 |
| 14 | 16095 | 19805 | 11140 | 4950 | 2 |
| 15 | 20600 | 25355 | 14260 | 6340 | 2 |
| 16 | 26365 | 32450 | 18255 | 8115 | 2 |
| 17 | 33750 | 41540 | 23365 | 10385 | 2 |
| 18 | 43200 | 53170 | 29910 | 13290 | 2 |
| 19 | 55295 | 68055 | 38280 | 17015 | 2 |
| 20 | 70780 | 87110 | 49000 | 21780 | 2 |
| SUM | 321250 | 395375 | 222400 | 98840 |
Storage Capacity
| Level | Without Travian Plus | With Travian Plus |
| 1 | 3,600 | 4,500 |
| 2 | 5,100 | 6,375 |
| 3 | 6,900 | 8,625 |
| 4 | 9,300 | 11,625 |
| 5 | 12,000 | 15,000 |
| 6 | 15,000 | 18,750 |
| 7 | 18,900 | 23,625 |
| 8 | 23,100 | 28,875 |
| 9 | 28,800 | 36,000 |
| 10 | 36,000 | 45,000 |
| 11 | 43,200 | 54,000 |
| 12 | 54,000 | 67,500 |
| 13 | 66,000 | 82,500 |
| 14 | 78,000 | 97,500 |
| 15 | 96,000 | 120,000 |
| 16 | 114,000 | 142,500 |
| 17 | 135,000 | 168,750 |
| 18 | 165,000 | 206,250 |
| 19 | 198,000 | 274,500 |
| 20 | 240,000 | 300,000 |
| Level | Without Travian Plus | With Travian Plus |
| 1 | 4,500 | 5,625 |
| 2 | 6,375 | 7,969 |
| 3 | 8,625 | 10,781 |
| 4 | 11,625 | 14,561 |
| 5 | 15,000 | 18,750 |
| 6 | 18,750 | 23,438 |
| 7 | 23,625 | 29,531 |
| 8 | 28,875 | 36,094 |
| 9 | 36,000 | 45,000 |
| 10 | 45,000 | 56,250 |
| 11 | 54,000 | 67,500 |
| 12 | 67,500 | 84,375 |
| 13 | 82,500 | 103,125 |
| 14 | 97,500 | 121,875 |
| 15 | 120,000 | 150,000 |
| 16 | 142,500 | 178,125 |
| 17 | 168,750 | 210,938 |
| 18 | 206,250 | 257,813 |
| 19 | 247,500 | 309,375 |
| 20 | 300,000 | 375,000 |
| Level | Without Travian Plus | With Travian Plus |
| 1 | 5,400 | 6,750 |
| 2 | 7,650 | 9,563 |
| 3 | 10,350 | 12,938 |
| 4 | 13,950 | 17,438 |
| 5 | 18,000 | 22,500 |
| 6 | 22,500 | 28,125 |
| 7 | 28,350 | 35,438 |
| 8 | 34,650 | 43,313 |
| 9 | 43,200 | 54,000 |
| 10 | 54,000 | 67,500 |
| 11 | 64,800 | 81,000 |
| 12 | 81,000 | 101,250 |
| 13 | 99,000 | 123,750 |
| 14 | 117,000 | 146,250 |
| 15 | 144,000 | 180,000 |
| 16 | 171,000 | 213,750 |
| 17 | 202,500 | 253,125 |
| 18 | 247,500 | 309,375 |
| 19 | 297,000 | 371,250 |
| 20 | 360,000 | 450,000 |
| Level | Without Travian Plus | With Travian Plus |
| 1 | 7,200 | 9,000 |
| 2 | 10,200 | 12,750 |
| 3 | 13,800 | 17,250 |
| 4 | 18,600 | 23,250 |
| 5 | 24,000 | 30,000 |
| 6 | 30,000 | 37,500 |
| 7 | 37,800 | 47,250 |
| 8 | 46,200 | 57,750 |
| 9 | 57,600 | 72,000 |
| 10 | 72,000 | 90,000 |
| 11 | 86,400 | 108,000 |
| 12 | 108,000 | 135,000 |
| 13 | 132,000 | 165,000 |
| 14 | 156,000 | 195,000 |
| 15 | 192,000 | 240,000 |
| 16 | 228,000 | 285,000 |
| 17 | 270,000 | 337,500 |
| 18 | 330,000 | 412,500 |
| 19 | 396,000 | 495,000 |
| 20 | 480,000 | 600,000 |