Number 1 for us is Beijing capital city whose story goes back at least 3000 years.
You’ll find a wealth of history, both ancient the Hall of Preserving Harmony, Summer Palace, Forbidden City and more recent Chairman Mao Memorial Hall, Tienanmen Square. For the best market experience, choose the Dirt Market over the touristy Silk Market. A visit to the Great Wall, the longest man made structure in the world, is absolutely essential.
This will be a different sort of holiday. You will come home full of impression and some amazing photos that you can show your friends and family.