Upon settling in Bangkok after World War II, American-born Jim Thompson revived the Thai silk-weaving industry by sending samples to fashion houses in Milan, London, and Paris. Jim mysteriously disappeared in 1967, but his 200-year-old traditional Thai-style house remains a museum for Asian artefacts, textiles, and paintings. Remember to book, as it can only be viewed on a guided tour.
Dating back to 1782 when Bangkok was founded as the new capital of Thailand, the Grand Palace houses several temples decorated with ornate tiles and ceramics. Wat Phra Kaeo is not only the highlight but also the holiest of all Thai temples, as it's the resting place of the sacred Emerald Budda.
Bangkok is home a plethora of markets, and each has its own vibe, but the Rod Fai Market is one of the best, as it hosts stalls with lots of authentic local wares, and sells everything from boutique clothing to vintage motorbikes. The extensive Chatuchak Weekend Market is also well worth a look, but you'll need to plan your time wisely.
In a land famous for its massages, it'd be practically criminal not to have one, and if you only go to one place, go to Wat Pho. The birthplace of traditional Thai massage, Wat Pho is a temple, a school, and a spa in one, which means you can have a world-class massage, and then learn the skill yourself.
Wat Pho is Bangkok's oldest temple, dating back to 1688 and the reign of King Petraja of Ayutthaya. Its most famous for the 46-metre long, 15-metre high Reclining Buddha, which is gold-plated and inlaid with mother-of-pearl. While there, you can also take a stroll through the tranquil rock gardens, chapels, cloisters, and stupas.