You get so many thousands and thousands of piastres by throwing parties and collecting from the tourists during the time of the party, the higher the level of stars on your hotel the more you will get.
 
Please note Here is the list of the current buildings, more will be added as the Bay grows:
  1. Tropical Bridge: 900 piastres every 12 hours
  2. Dodo Nest: 1300 piastres every 12 hours
  3. Cliff edge Lighthouse: 2000 piastres every 24h
  4. Kayak Rental: 2000 piastres every 24 hours
  5. Diving School: 1300 piastres every 16 hours 
  6. Victor Richy’s Villa: 1200 piastres every 20 hours
  7. Caribbean Square: 2700 piastres every 24 h
  8. House “Figueres”: 2500 piastres every 20 hours  
  9. “Corus” Hotel: 2500 piastres every 18 hours
  10. Designer’s Belvedere 600 piastres every 7 hours 
  11. Maître d’s House : 400 piastres every 8 hours
  12. Captain’s House : 200 piastres every 6 hours 
  13. Wooden Bridge : 1200 piastres every 24 hours
  14. Tribe village : 1400 piastres every 24 hours
  15. Tropical park: 1800 piastres every 20 hours
  16. Ocean Research Centre : 1500 piastres every 16 hours
  17. Tree House : 1700 piastres every 24 hours
  18. Easter Island Moai: 3000 piastres every 36 hours
  19. Yellow Submarine: 2100 piastres every 24 hours
  20. Adventure Fortress (construction completed) : 2500 piastres every 24h
  21. Seafarer's Haven: 1200 piastres every 24 hours 
  22. Faisal Mosque: 2000 piastres every 24 hours
  23. Esperanto Museum in Svitavy: 3000 piastres every 24 hours
  24. Church of St. Clare in Horodkivka: 2000 piastres every 24 hours
  25. Collegiate Church in Stuttgart: 2000 piastres every 24 hours
  26. Cathedral of Brasília: 3000 piastres every 24 hours
  27. Port Elizabeth City Hall: 2000 piastres every 24 hours
  28. High-Tech Animal Yard: 150 piastres every 24 hours
  29. Bolsward City Hall: 2000 piastres every 24 hours
  30. Zeiss Major Planetarium level 1: 3000 piastres every 24 hours
  31. Zeiss Major Planetarium level 2: 3500 piastres every 24 hours
  32. Zeiss Major Planetarium level 3: 4000 piastres every 20 hours
  33. Zeiss Major Planetarium level 4: 4000 piastres every 20 hours
  34. Zeiss Major Planetarium level 5: 4000 piastres every 18 hours
  35. Zeiss Major Planetarium level 6: 5000 piastres every 16 hours
  36. Swansea Morgans Hotel level 1: 4000 piastres every 24 hours
  37. Swansea Morgans Hotel level 2: 4500 piastres every 20 hours
  38. Swansea Morgans Hotel level 3: 5000 piastres every 18 hours
  39. LEGO House: 3000 piastres every 24 hours
  40. Chapel of the Amulden Cemetery: 2000 piastres every 24 hours
  41. Water tower in Chambéry, level 1: 3000 piastres every 24 hours
  42. Water tower in Chambéry, level 2: 3500 piastres every 22 hours
  43. Water tower in Chambéry, level 3: 4000 piastres every 20 hours
  44. Water tower in Chambéry, level 4: 4500 piastres every 20 hours
  45. Water tower in Chambéry, level 5: 4500 piastres every 18 hours
  46. Water tower in Chambéry, level 6: 5000 piastres every 16 hours
  47. Balancing Rock level 1: 4000 piastres every 24 hours
  48. Balancing Rock level 2: 4500 piastres every 20 hours
  49. Balancing Rock level 2: 5000 piastres every 18 hours
  50. The Dorilton: 2000 piastres every 24 hours
  51. Luxury Christmas: 150 piastres every 24 hours
  52. House of Justice in Tbilisi, level 1: 3000 piastres every 24 hours
  53. House of Justice in Tbilisi, level 2: 3500 piastres every 22 hours
  54. House of Justice in Tbilisi, level 3: 4000 piastres every 20 hours
  55. House of Justice in Tbilisi, level 4: 4500 piastres every 20 hours
  56. House of Justice in Tbilisi, level 5: 4500 piastres every 18 hours
  57. House of Justice in Tbilisi, level 6: 5000 piastres every 16 hours
  58. Lava hot spring, level 1 : 4000 piastres every 24 hours
  59. Lava hot spring, level 2 : 4500 piastres every 20 hours
  60. Lava hot spring, level 3 : 5000 piastres every 18 hours
  61. Upgraded Botanical Garden: 150 piastres every 24 hours
  62. Eastern Columbia Building, level 1: 3000 piastres every 24 hours
  63. Eastern Columbia Building, level 2: 3500 piastres every 24 hours
  64. Eastern Columbia Building, level 3: 4000 piastres every 20 hours
  65. Eastern Columbia Building, level 4: 4500 piastres every 20 hours
  66. Eastern Columbia Building, level 5: 4500 piastres every 18 hours
  67. Eastern Columbia Building, level 6: 5000 piastres every 16 hours
  68. Memorial to Juan Pich and Pon: 3000 piastres every 24 hours
  69. Church of the Heart of Mary in Pittsburgh: 2000 piastres every 24 hours
  70. Luxury “Feline Repose” Castle: 150 piastres every 24 hours
  71. Geisel Library, Level 1: 3000 piastres every 24 hours
  72. Geisel Library, Level 2: 3500 piastres every 22 hours
  73. Geisel Library, Level 3: 4000 piastres every 20 hours
  74. Geisel Library, Level 4: 4500 piastres every 20 hours
  75. Geisel Library, Level 5: 4500 piastres every 18 hours
  76. Geisel Library, Level 6: 5000 piastres every 16 hours