Juneau Cruise Port Guide: Mendenhall Glacier, Glacier Gardens and More

If you have one day in Juneau on an Alaska cruise, here is my answer: pair Mendenhall Glacier with Glacier Gardens. Both sit north of downtown, out toward the Mendenhall Valley, and together they show you two very different sides of Southeast Alaska in a single port day: a river of ice and a rainforest full of flowers.

I sailed Alaska’s Inside Passage in early June 2023 aboard Norwegian Sun, on a 10-day roundtrip from Seattle. Juneau was our first port, on June 4, and we spent our time there at Mendenhall Glacier and Glacier Gardens. Here’s what to know about both, plus the other options I’d weigh when planning your own day in Alaska’s capital.

Juneau at a glance

Juneau is Alaska’s capital, and there is no road connecting it to the rest of the state or the Lower 48. According to Travel Alaska, it’s the only U.S. state capital you can reach only by plane or boat, which makes sailing in feel like arriving somewhere truly remote. Mendenhall Glacier is about 12 miles from downtown, so it’s worth deciding before you dock how you’ll get there and back.

Mendenhall Glacier

Mendenhall Glacier is about 13 miles long and flows down from the Juneau Icefield, a 1,500-square-mile remnant of the last ice age. It’s part of the Tongass National Forest, and the Mendenhall Glacier Visitor Center is run by the U.S. Forest Service. Inside you’ll find exhibits, a short film and rangers who can answer questions. In summer the visitor center is open daily, and the grounds are open year-round.

We visited Mendenhall Glacier on our Juneau day, and the photo at the top of this post is mine from that visit.

A glacier that is changing

The Forest Service tells the Mendenhall story as one of a changing climate and a retreating glacier. That change is happening fast. In late 2025, scientists confirmed that the glacier no longer meets Mendenhall Lake for the first time, as KTOO reported. The glacier is still the centerpiece of the view, but the landscape you see today is different from the one in my 2023 photos, and it will keep changing. If Mendenhall is on your wish list, I’d say go sooner rather than later.

Trails near the visitor center

The most popular walk is the Nugget Falls Trail. It’s 0.8 miles long and low gradient, starting partway down the Photo Point Trail and ending at Nugget Falls, which pours down beside the lake. Other short trails lead along salmon streams and through the rainforest.

Wildlife is possible here, though never guaranteed. The Forest Service lists black bears, porcupines, beavers, bald eagles, arctic terns and salmon among the animals you might see. When Forest Service staff are on the trails to help keep people and bears apart, follow their instructions.

Glacier Gardens: a rainforest garden with upside-down trees

Glacier Gardens Rainforest Adventure is a family-run, 50-acre botanical garden in the Tongass National Forest. Its signature sight is the flower towers: storm-felled tree trunks turned upside down and planted with cascading flowers. They are colorful, a little whimsical and the garden’s most talked-about feature.

The guided tour runs about 60 to 90 minutes in covered golf carts that can accommodate guests with limited mobility. You’ll wind up through Sitka spruce and western hemlock to a viewpoint about 580 feet above sea level, with views over the Mendenhall Valley toward the Chilkat Mountains. Afterward you can wander the lower botanical garden on your own. Keep an eye out for bald eagles.

We visited Glacier Gardens too and rode their tram up through the rainforest. If you’d like an easygoing excursion that doesn’t involve a long hike, it’s a lovely choice, rain or shine.

More ways to spend a day in Juneau

Whale watching

Whale watching is a classic Juneau excursion. Travel Juneau says humpback whales are in the waters of the northern Inside Passage from April to November, and many local companies run tours. Sightings are possible in season, but wildlife is never guaranteed.

Goldbelt Tram (Mount Roberts)

The Goldbelt Tram, long known as the Mount Roberts Tramway, normally rises 1,800 feet from the downtown cruise dock to trails and views over Gastineau Channel. It was closed through the 2026 summer season after an accident in April, and in late September KTOO reported that its reopening was still uncertain. If it’s on your list, check its status before you sail.

Alaska State Capitol

For a little history, the Alaska State Capitol in downtown Juneau offers guided tours on summer weekdays, plus a self-guided audio tour you can take at your own pace.

Tips for a Juneau port day

• Book popular excursions ahead. Whale-watching boats and guided tours can fill up on busy cruise days.
• Plan your ride to Mendenhall. The Forest Service notes shuttle buses, taxis and permitted tour companies serve the glacier from the cruise docks. Ask at the dock if you’re going on your own.
• Pack for rain. Juneau sits in a rainforest. A waterproof jacket, layers and comfortable shoes will keep you happy.
• Bring binoculars. They make a big difference for eagles, whales and mountain views.
• Mind the clock. Check your hours in port and leave a cushion between your tour’s return and all-aboard time.

Juneau cruise port FAQ

Can I visit Mendenhall Glacier without a ship excursion?

Yes. The visitor center is about 12 miles from downtown, and the Forest Service lists shuttle buses and taxis from the cruise docks, as well as permitted tour companies. Just build in enough time to get back to the ship.

Is Mendenhall Glacier still worth seeing?

I think so. It’s still one of Alaska’s most accessible glaciers, and the visitor center’s exhibits explain how the landscape is changing. That change is part of the reason to go now.

What are the flower towers at Glacier Gardens?

They’re storm-felled tree trunks turned upside down and planted with flowers on top. You’ll see them along the guided rainforest tour and in the gardens.

Will I see whales in Juneau?

You might. Humpbacks are in the area from April to November, and a whale-watching tour gives you the best chance. Still, sightings are never guaranteed.

Planning an Alaska cruise?

Choosing the right excursion in each port can make or break a cruise day. I’d love to help you plan yours, Juneau included. Reach out here and let’s talk about your Alaska trip. If Ketchikan is also on your itinerary, read my Ketchikan cruise port guide, and for more from my own cruise, read Seeing Alaska Beyond the Big Cruise Ships.