Singapore celebrates its 46th National Day on Tuesday, and several observance ceremonies were held on Monday to mark the occasion. Crowds thronged the Marina Bay Sands and Resorts World Sentosa to soak in the Singapore spirit this National Day.

Fireworks explode above the financial skyline on Tuesday Aug. 9, 2011 in Singapore which celebrates its 46th year of independence. Singapore declared independence on Aug. 9, 1965.