Everybody visits the Grand Palace in Bangkok. Ain't no shame in visiting a major tourist site when you ARE a tourist in this beautiful Kingdom. Remember to dress appropriately, as in modest.
Have to admit this was a photo-op and not so much a personal culinary adventure.
The Asiatique Sky ferris wheel is a landmark in Bangkok. It is in Asiatique The Riverfront which is a large open-air mall/market. It's a bit outside the central areas so the most memorable part was the crazy tuk tuk ride there. When you decide to tuk tuk your way around, be sure to agree to the price first before going anywhere.
We did a cruise on the Chao Phraya River. It's worth doing at least once. It does a little tour on the river and offers a different perspective of the city.