By Forrest Whitman Here are a few places to see and visit on a super Colorado train trip. Your window to it all is on the California Zephyr (AMTRAK train #5). Settle in to the sightseer lounge, or the dining car, or maybe your seat-side window. It’s a fine day trip from Denver to Glenwood Springs. It’s fun to board at Union Station, Denver. The old gray lady is showing her best holiday side. You may come on the W line (free parking at Jefferson Center) or maybe take the RTD “Bustang” from our Central Colorado home land in Salida, ...