Online tickets ~790 THB (~$22 USD) per person vs 990 THB at the door – always book ahead. Located inside Siam Paragon mall – a perfect rainy-day or midday heat escape. The glass tunnel walkthrough with sharks overhead is a showstopper for kids of all ages. Budget 2-3 hours and combine with a meal upstairs in the mall food court for an easy full-day plan.

Address: Siam Paragon B1-B2, 991 Rama I Rd, Pathum Wan, Bangkok 10330

Google Maps: Click here for directions

Cost: Paid $$$