Museum Siam Khet Phra Nakhon is an interactive museum full of surprises. On the outside, it’s a stately, neoclassical building. Once you step in, you’ll see a juxtaposition of antique fixtures and technology combined with modern art. Each of the 14 rooms are designed to showcase the history, culture, and evolution of the Thai people through video, audio, and interactive elements. There’s a lot to absorb, and you could easily—and happily—spend three hours wandering.