Peyto Lake, Canada

The U.K.-based travel firm Kuoni has set out on a mission to determine which of the world's natural wonders are the most eye-catching – scientifically speaking.

Here are the 15 most stunning ones:

Meeru Island, Maldives

Jurassic Coast, England

Yosemite, U.S.

Lake Tekapo, New Zealand

Niagara Falls, Canada/U.S.

Snowdon, Wales

Puerto Princesa Subterreanean River, Philippines

Marble Caves, Chile

El Yunque National Forest, Puerto Rico

Aurora Borealis, Iceland

Iguazu Falls, Argentina/Brazil

Lake Matheson, New Zealand

Phang Nga Bay, Thailand

The Grand Canyon, U.S.