New Chests: Carmo Church!
Requirements: the chests will be received by players level 15+
Main reward is the Carmo Church (4,500 coins, 2-3 energy, 1-4 glass bauble every 24 hours, size 8*6, can be placed anywhere except the Snowy Plateau)
Each chest can be opened for 9 Ice keys.
There are 3 ways to get Keys:

1. Complete the quests:

Ask friends for 7 Ancient Books
Collect 8 Horticulturalist Books (Bookshop)
Collect 4 Books (School, Valley School)

Collect 11 Trowels (Central Station, Subway Station, Upgraded Subway Station, Eastern Station)
Collect 18 Wires (Construction factory, Upgraded Construction Factory)
Collect 8 Valves (Premium Cottage)

Produce 10 Bricks (Cargo Port)
Collect 2 Red paintbrushes (Luxury Apartment)
Collect 25 Saws (Colonial House, Upgraded Colonial House)

2. Collect profits from the following buildings:

  • Supertanic Liner (1 key every 24 hours)
  • Christmas Market (1 key every 24 hours)
  • Belfast Town Hall (1-2 keys every 20 hours)
  • Center of Culture (3-5 keys every 20 hours)
  • Thean Hou Temple (2-3 keys every 22 hours)
  • Wightwick Mansion (2-3 keys every 22 hours)
  • Chess Pair (2-5 keys every 24 hours)

3. Use the sale offer!

SPECIAL OFFER WITH THE CARMO CHURCH CHEST EVENT

Special Offer with Carmo Church chest event

Belfast Town Hall: 4,100 coins, 1-3 energy, 1-3 glass baubles, 1-2 ice keys every 20 hours, 75 marathon points one time when buying, size 10*8, can be placed anywhere except the Snowy Plateau, 
Wightwick Manor: 4,100 coins, 1-4 energy, 2-3 glass baubles, 2-3 ice keys every 22 hours, 75 marathon points one time when purchasing, size 10*7, can be placed anywhere
Corvin Castle: 4,100 coins, 3-5 energy, 80 marathon points, 40 ice keys one time when buying;
Center of Culture: 5,500 coins, 3-5 energy, 3-5 keys during the Carmo Church chest event, 75 marathon points one time when purchasing
Thean Hou Temple: 4,200 coins, 2-4 energy, 2-4 glass baubles, 2-3 ice keys during the Carmo Church chest event every 22 hours, 75 marathon points one time when buying;
The Chess Pair: 4,900 coins, 3-5 energy, 2-5 ice keys during the Carmo Church chest event every 24 hours + 75 marathon points one time when bought.