The Winter Gate is a special building released for the 2013 Winter Event. It is classed as a decoration and provides happiness and can be polished. The one from 2014 is classed as a cultural building.
Winter Deco Selection Kit
The 2018 Winter Event introduced the Winter Deco Selection Kit which allows players to choose a Winter Gate as one of the options.
Happiness
 Age
| Happiness
| Efficiency / 
|
|---|---|---|
| Bronze Age | 80 | 40 |
| Iron Age | 110 | 55 |
| Early Middle Ages | 150 | 75 |
| High Middle Ages | 160 | 80 |
| Late Middle Ages | 180 | 90 |
| Colonial Age | 210 | 105 |
| Industrial Age | 240 | 120 |
| Progressive Era | 260 | 130 |
| Modern Era | 280 | 140 |
| Postmodern Era | 300 | 150 |
| Contemporary Era | 340 | 170 |
| Tomorrow Era | 420 | 210 |
| Future Era | 500 | 250 |
| Arctic Future | 580 | 290 |
| Oceanic Future | 670 | 335 |
| Virtual Future | 800 | 400 |
