Ferris Wheel 
To dream of a Ferris wheel indicates that you are spinning your wheels. You are not getting anywhere in your life. This dream can also represent the 'circle of life,' which has highs and lows throughout the natural progression.
Amusement Park
To dream about being in an amusement park signifies that you require some relaxation time and more fun out of life. Most aspects of the amusement park are indications of yourself. This also could mean that recently you have been readily sidetracked.
To dream of an abandoned amusement park could indicate that you require more excitement and exploration of fun in your life.
Scales of Justice
The scales of justice in a dream symbolize balancing a difficult decision.
To see a balanced scale of justice indicates that your life has reached a state of harmony.