Starting in May the Oeschinen Lake cable car operator will allow visitors to book cable car tickets in advance.

Embark on an unforgettable journey through Switzerland’s most iconic destinations, where every turn reveals a new marvel. From the pristine waters of Oeschinen Lake to the dramatic ridges of Schäfler, ...

Why it's incredible: The lake is one of the largest on Earth, but it lies beneath several miles of ice. Lake Vostok is a giant lake in Antarctica that is similar in size to North America's Lake ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet ...