While much of Bangkok is ultramodern, filled with skyscrapers, rooftop bars, and condominiums, there are plenty of sites of historical importance, all of which are well worth several days of exploration, to help get a sense of Thailand's historical, cultural, and traditional roots. Leading the list is the most venerated historical and visited attraction, the opulent Grand Palace, which is also the home of Wat Phra Keo, better known as the Temple of the Emerald Buddha, and these days somewhat of a living museum.
Also worth checking out for their historical significance as well as a look into famous Thai figures are the astounding Vimanmek Mansion teak palace, the hidden and quaint M.R. Kukrit's House, the Suan Pakkad Palace, and the historical home of silk legend Jim Thompson.
Many of the historical spots are temples and palaces, but you can also discover plenty of Bangkok's past in spots such as the old alleyways of Chinatown, which should be a priority on any visitor's sightseeing list, and to further appreciate it all, you should make sure to pay a visit to the National Museum, Thailand's largest, where every piece of Thai history, art, and culture can be unearthed and explained.