Place 50 decorations

Unlock the geometric hologram

Use the camera movement tool

Unlock the skyreacher hologram

Found the whale hologram

Create 100 buildings

Unlock all building logos

Create 1000 buildings

Import an image to a billboard

Unlock the monk hologram

Place 500 decorations

Create a bridge in Lowtown

Place 25 decorations

Unlock the Discobolus hologram

Create 50 buildings