The entire length of the border is marked by a 20-foot-wide slash through the trees.

Soaring over the Niagara Whirlpool since 1916.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

Fossils, railroads, and waterfalls!

This natural sea cave hides a small wonderland of natural turquoise beauty.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

One of the biggest markets in Asia, under one of the continent's largest domes.

A quick and simple solution to Cambodia's train woes.

An Amazonian hotel is the ultimate treehouse and provides stilt based accommodation.

This unique 230-foot waterfall is a natural beauty hidden within the vast wild landscape.

Unusual rock formations eroded into a landscape of stone beasts.

At 705 feet high, Brazil's "House of Stone" is the largest cave mouth in the world.

You feel like you're in a forest, but you're actually walking amidst the branches and trunks of a single giant tree.

There is only one place in the world where the corners of four nations come together.

The soaring gondola lines form the longest aerial cable car system in the world.

This lake’s emerald green waters are a spectacular sight, but it’s not a great place for a swim.

Death road of Bolivia.

This red lake 4,000 meters above sea level is home to rare flamingos.

A seemingly endless landscape of pure salt stretches far across Bolivia.

The largest and, arguably, most scenic fortress in Bhutan.

The small sanctuaries lie just off the beaten path near one of Bhutan's most famous attractions.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

Because sometimes you need to make a batch of frites even when the stores are all closed.