Complex sentence: The first diesel-powered streamlined stainless-steel train, the Pioneer Zephyr, is on permanent display in the Great Hall, renamed the Entry Hall in 2008, and a free tour goes through it every 10--20 minutes.
Split into simpler sentences: The first diesel-powered streamlined stainless-steel train, the Pioneer Zephyr, is on permanent display in the Great Hall, renamed the Entry Hall in 2008. A free tour goes through it every 10--20 minutes.