The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The red crab exhibits one of the most spectacular migrations on earth, despite manmade obstacles.

During the holidays, a vintage subway train whisks New Yorkers back in time.

In the Manduri reserve of Sao Paulo, you can see the endangered black-horned capuchin monkey up close.

Located in Nairobi National Park, this animal orphanage is the oldest of its kind in Kenya.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A massive underwater sinkhole made famous by Jacques Cousteau.

The oldest living organism in New York City. Maybe.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

A lavender labyrinth so large it’s visible on Google Earth.