Entry No. 24 — the Boise file — filed under: outdoor
Winter Garden aGlow at Idaho Botanical Garden
Each winter the Idaho Botanical Garden, set on the grounds of the old state penitentiary, strings more than 850,000 lights across its 33-acre grounds, much of it hand-strung by staff and volunteers. The result is a walk-through light environment threading through garden beds, with a model train display winding through the bulbs and warm drinks along the way. It runs only from late November through New Year's Eve and, now in its 29th season, is one of the city's oldest holiday traditions.
The story
You're standing on the grounds of Boise's 1870s territorial prison, where inmates once quarried sandstone from Table Rock to erect their own prison walls. Every winter, the Idaho Botanical Garden transforms this 33-acre site into a massive dark-sky light environment. Now in its 29th season, the display relies on staff and community volunteers spending months hand-stringing more than 850,000 lights across dormant plant beds and bare tree branches.
Rather than relying on pre-fabricated commercial frames, the bulbs are wrapped directly into the garden's high-desert topography. Pathways weave past low-glowing shrubbery, under wrapped canopy branches, and past a model train display zipping along tracks nestled directly inside the light-drenched beds. You didn't hear it from us, but taking in hundreds of thousands of bulbs against the shadow of the old penitentiary gives the whole evening a stark, surprisingly conspiratorial backdrop you won't get at standard drive-through light displays.
What it's like
Bundle up in serious cold-weather gear—foothill temperatures regularly drop into the 20s after dark. Expect to spend 45 to 60 minutes walking gravel and paved garden paths. Timed-entry tickets must be purchased online in advance, and weekend slots fill up fast, so target a weeknight if you want lighter crowd density. Once inside, grab a hot cup of cocoa, pause near the outdoor fire pits to thaw your hands, and watch the model train make its loops through the light-covered grounds.
The move: Bundle up for an evening lap through the glowing garden paths, splitting a free cup of cocoa and hunting for the train.
- 📍 Boise (Old Penitentiary district)
- 💸 $$
- ⚡ Up for anything
- 🌗 Indoors
Where: 2355 Old Penitentiary Road, Boise, ID 83712
Hours: Added 2026-06-24 — confirm current hours before you go.
⚠ Seasonal or scheduled — always check before you go.
Pair it with
- Old Idaho Penitentiary — Explore the adjacent 1870s sandstone prison complex during daytime hours before the garden lights switch on next door.
- Idaho Museum of Mining & Geology — Visit this free, volunteer-run museum sharing the same historic district to see local Idaho rock and mineral collections before sundown.
- Boise Castle Home — Take a two-minute drive down Warm Springs Avenue to view a private residential castle built less than a mile away.
- Thick as Thieves — Head into downtown Boise after your cold outdoor walk to enter a hidden speakeasy using a vintage rotary phone.
Good to know
When does Winter Garden aGlow run?
The event takes place seasonally from late November through New Year's Eve, opening during evening hours.
How many lights are on display?
More than 850,000 lights are hand-wrapped across the garden's 33 acres by staff and volunteers each year.
Where is the garden located?
It sits at 2355 Old Penitentiary Road in Boise, adjacent to the historic Old Idaho Penitentiary.
Do I need to buy tickets in advance?
Yes, admission is managed through timed-entry tickets purchased online beforehand to control crowd flow.
Plan a visit & invite your people →
Further reading: Official site · ktvb.com · kivitv.com · boisechamber.org
last checked: 2026-06-24