The exhibition began as a journey with the TransSiberian Railway from Moscow to Beijing but several travels have been added it has been a longterm project without an end but the book on Bangkok is finished By the River of Kings has been printed

What is the correctly punctuated version of this sentence?
The exhibition began as a journey with the Trans-Siberian Railway from Moscow to Beijing, but several travels have been added, it has been a long-term project without an end, but the book on Bangkok is finished, By the River of Kings has been printed.