Requirements: the chests will be received by players level 15+

The main reward is The Ruins in Talisay (4200 coins, 1-3 energy, 1-3 glass baubles every 24 hours, size is 8*6, can be placed anywhere).
Each chest can be opened for 9 Ice keys.
There are 3 ways to get Keys:

1. Complete the quests:

Delicious Bouquets I (3 keys)
Collect 19 Peacock Feathers (Stationery shop, Upgraded Stationery Shop)
Collect 5 Planetary Models (School, Valley School)
Collect 13 Squibs (Recreational Cottage, Upgraded Recreational Cottage)

Delicious BouquetsII (3 keys)
Collect 17 Feather Dusters (Shoe Shop, Upgraded Shoe Shop)
Collect 11 Coffee Beans (Coffee House, Upgraded Coffee House)
Collect 8 Sensors (Water Tower, Upgraded Water Tower)

Delicious BouquetsIII (4 keys)
Collect 5 Radars (Electronics Plant, Upgraded Electronics Plant)
Collect 34 Ropes  (Textile Factory, Upgraded Textile Factory)
Ask Friends for 7 Joysticks

2. Collect profits from the following buildings:
Lighthouse 1 key every  (24 hours)
Student Campus 1 (12 hours)
Church of St Mary - 2-3 keys (24 hours)
Villa Augusta in Dordrecht 2-3 (24 hours)
Pavilion Hanau  2-3 (24 hours)

3. Use the sale offer!

Special offer with The Ruins in Talisay: Players level 17+

Hanau Pavilion: 4000 coins, 1-4 energies, 1-4 baubles, 2-3 Ice Keys every 24 hours during the promotion. Size is 7*6 can be placed everywhere
Also available are the following buildings:

Church of St Mary: Every 24 hours: 4000 coins, 1-4 energies, 1-4 baubles, 2-3 Ice keys during the promotion
Villa Augustus in Dordrecht: Every 24 hours: 4000 coins, 1-4 energies, 1-4 baubles, 2-3 Ice Keys during the promotion
Las Lajas Shrine: Every 24 hours: 4600 coins, 2-4 energy
Blue Church: Every 22 hours: 4200 coins, 2-3 energy
Leeds Corn Exchange: every 23 hours: 4300 coins, 1-3 energy