Tracy Arm Fjord, Alaska

When you reach Tracy Arm fjord, 80 kilometres south-east of Juneau, you will sail into the middle of the inlet, surrounded by waterfalls cascading down granite cliffs into the sea. A few seals guarding their spur of ice may add unexpected spice to your expedition. This is your opportunity to see the Sawyer glacier close up. Majestic and otherworldly, it spans the whole length of the mountain in shades of crystalline blue: without a doubt, this is one of the most breath-taking wonders of Alaska.