Europe’s national parks are quieter, cheaper and easier to reach than America’s — from Plitvice’s turquoise lakes to Iceland’s ice caves. The 12 worth a trip, with timing.

The 12 US national parks worth building a trip around — Yellowstone to Zion — with honest timing, the reservations you now need, and the $80 pass that pays for itself.

Yosemite’s granite walls, waterfalls, and giant sequoias make it bucket-list. Plan 3-4 days minimum.

Zion’s red rock cliffs, Virgin River, and hiking make it Utah’s most visited park. 3 days covers main hikes.

The Grand Canyon is 277 miles long, up to 18 miles wide, and a mile deep. Most visit South Rim. Plan 2-3 days for highlights.

Yellowstone is America’s first national park (1872). Geysers, hot springs, wildlife, canyons. Plan 3-5 days minimum.