According to my mother,

[Alesya]

Siam Paragon
Temple Of Dawn 
The Grand Palace
Wat Phra Chetuphon
Jim Thompson House
Chatuchak Weekend Market
MBK Center (Ma Boon Khrong Center) 
Temple of the Emerald Buddha (Wat Phra Kaew) 
These are the amazing attractions in Bangkok according to my mother. Actually, She explored this city with her friends and My mother's favorite attraction is the Grand Palace in  Bangkok. By the way, have you ever been there?

My father plans to enjoy westcoastbus tour.