Over seven years, the Ministry's project restored the objects included in the guide and recorded the changes.
The 400-page book is available here in Latvian and English.
Historian Gvido Straube said: "There are many pictures, it alone makes the book more interesting, people do like to see. There are facts, I leafed through it, I think, very interesting objects in Latvia, all over."
The objects are sorted in seven recommended routes. Each route has its own mascot or messenger, a Latvian public figure.
To further encourage travel, the organizers have also made a game competition with tasks, questions, and photo challenges.