Krišjānis Ķergalvis was a significant figure in Latvian history, recognized not only as one of the earliest millionaires but also as a driving force behind major architectural projects in Riga. He served for over thirty years as the chief mason of St. John's Guild, where his influences extended to the construction of notable buildings such as the National Theatre of Latvia and the Ministry of Foreign Affairs. His contributions to the field were often highlighted in discussions of the Latvian bourgeois society of his time.

The book 'The Enterprising Latvian: Master Mason Krišjānis Ķergalvis (1856–1936) and His Works' delves into Ķergalvis' life, revealing the significant social and cultural landscape of Latvia during this period. It demonstrates how Ķergalvis embodied the spirit of innovation and civic duty, as he not only built structures but also supported the development of arts and culture in Latvia through his investments and patronage. His legacy is marked by his influential roles as a businessman and civic leader.

Through Ķergalvis' story, readers gain insight into the aspirations and challenges faced by the Latvian middle class during a transformative era in the nation's history. It emphasizes the intersection of personal ambition and broader societal progress in Latvia’s journey towards nationhood, making Ķergalvis an emblematic figure of the time with a profound impact on the architectural and cultural fabric of Riga.