SYDNEY IS CURRENTLY entering into its fourth year of festivities celebrating light, music, and ideas. Vivid Sydney (the largest annual winter festival in the Southern Hemisphere) lasts for 18 days, during which 50 monumental light installations transform the city into a psychedelic wonderland. Here are 12 Instagram shots that prove that right now Sydney is the most colorful city in the world.

1. The Sydney Opera House in lights

2. Electric blue light origami on Alfred St

A photo posted by @vividsydney on

3. Fireworks over Circular Quay

A photo posted by !!⠀Steve !! (@shirty_i_am) on

4. A projection of BBC Life Story

5. Sydney Harbor Bridge in full glory

6. Internal Galaxy, The Rocks

A photo posted by @vividsydney on

7. The Opera Bar — one of the best views for the Opera House installation

8. Luna Park

9. The Quad at The University of Sydney

10. Perfect rooftop view from The Star

11. Psychedelic Opera House

12. Nightlife on Circular Quay