Brunel began his foray into the world of structures at age 18, working as his father's chief assistant building the first tunnel under the Thames River in London, England (one that is still in use today).
Brunel began his foray into the world of structures at age 18. Brunel was working as his father's chief assistant. Brunel was building the first tunnel under the Thames River in London, England (one). This one is still in use today.