As frigid temperatures create a frozen shore along Lake Michigan, a beautiful, but dangerous attraction returns – shelf ice.

Tillamook Rock Lighthouse was built on a bare stone pillar hammered constantly by the Pacific Ocean. Construction crews had to leap from boats onto the rock and be winched up through crashing waves.

Heceta Head Lighthouse stands boldly on Oregon’s rugged coastline. It’s a timeless guide for ships — and now, for travelers.