There is a Beach Resort building on the coast.
 
The quest to restore it consists of 10 stages. Completing tasks is not limited in time.
 
Stage 1
Collect profit from the Administration 5 times 
Collect 30 ring cakes (Bakery, Upgraded Bakery) 
Collect 15 petrol cans (Petrol Station, Upgraded Petrol Station)
 
Stage 2
Collect 8 chainsaws (Ranch, Upgraded Ranch)
Collect 25 rakes (Summer House, Upgraded Summer House)
Collect 30 shovels (in friends' cities)
 
Stage 3
Collect 6 concrete slabs (Cargo Port)
Produce 35 lots of concrete compound (Construction Factory, Upgraded Construction Factory, Construction Megafactory)
Train 5 builders (College)
 
Stage 4
Collect 12 bricks (Cargo Port)
Collect 30 nails (in friends' cities)
Ask friends for 12 glasses
 
Stage 5
Produce 30 lots of parquet (Construction Factory, Upgraded Construction Factory, Construction Megafactory) 
Collect 30 cans of paint (Hotel; Ranch, Upgraded Ranch; Family House, Upgraded Family House; Comfortable House, Townhouse)
Collect 20 paint rollers (Petrol Station, Upgraded Petrol Station)
 
Stage 6
Produce 21 lots of silk (Textile Factory, Upgraded Textile Factory)
Train 5 designers (College)
Collect 8 sets of shells (Sushi Bar) 
 
Stage 7
Collect 15 trophies (Stadium, Volleyball Court, Tennis Court)
Collect 12 oars (Shopping Center)
Ask friends for 15 life jackets
 
Stage 8
Collect 6 swimming goggles (Luxury Apartment)
Collect 14 sun creams (Cosmetics Boutique)
Ask friends for 12 beach chairs
 
Stage 9
Collect 18 stars (Club, Concert Hall)
Collect 16 microphones (Pub, Upgraded Pub)
Collect 8 slides (Cinema)
 
Stage 10
Collect 40 leaflets (Textile Factory, Upgraded Textile Factory when you collect denim)
Collect 35 Hawaiian leis (Flower Kiosk, Upgraded Flower Kiosk, Flower Megamarket) 
Collect 35 balloons (in friends' cities)
 
After completing all 10 stages, the Beach Resort will bring you profits:
1100 coins, 4-6 energy every 24 hours