Natural Wonders

Iran's colorful terraces are a rare geological masterpiece.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

A mysterious crater-like pond has a spooky tendency to empty and fill with complete disregard to rainfall patterns.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

This stretch of the River Severn where large waves flow against the current is the birthplace of river surfing.

One of the most remote lodges in the Amazon offers rare wildlife encounters and undisturbed views of the Peruvian rainforest.

Nature's water park in the Wadi Bani Awf valley is full of pools flanked with cliffs and natural water slides.

In the right conditions a wall of water up to five feet tall flows upstream against the current on the River Trent.

Rising out of miles of farmland, these buttes are sometimes called the world's smallest mountain range.

A scenic canyon with thick forests and historic ruins.

A remote desert lookout offers unparalleled views of the California badlands for those who brave the trek.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.