Stranahan's is an old-school Denver whiskey distillery, right next to Interstate-25 in downtown Denver. They've been making straight whiskey here since 2004, using local ingredients and aging it in charred oak barrels, producing 2-, 3-, and 5 year-old whiskeys. This place is a must-see for any whiskey lover passing through the state. They do regular tours throughout the year and also host several special events, including the big Snowflake whiskey release in early December when hundreds of "Stranafans" line up and camp out for days to get one of the limited edition bottles.
Book a tour on their website, it is well worth the $10 fee. Or just show up and have a drink in their lounge.