Outdoors

13 of the Largest Zoos in the U.S.

Since the late 19th century, zoos have played an important role in wildlife conservation and public education about wildlife in the U.S. Check out 13 of America's largest zoos today, ranked by number of animals.

7 of the Coolest Caves You Can Visit Around the World

There are so many iconic landmarks and fascinating landscapes to explore on Earth’s surface that it’s sometimes easy to forget what lies underneath. Exploring the planet's vast network of caves is pretty much guaranteed to be an adventure, but these seven caves should be at the top of any aspiring spelunker’s bucket list.

Outdoors
The 14 Tallest Mountains in the U.S.

When it comes to the tallest mountains in the United States, one state in particular dominates the list: the “Great Land” of the Far North. Alaska’s 665,000 square miles are home to many of the highest-reaching peaks in the country, but not all of them. Explore the 14 tallest mountains in the United States.

Outdoors
6 Incredible Natural Wonders to See Before They Disappear

It’s difficult to imagine, but some of the world’s largest and most famous wonders are at risk of disappearing in the coming decades due to climate change and erosion. If you're a lover of the natural world, make sure to check out these six natural wonders before it’s too late.

Outdoors
6 Incredible Tourist Sites With a Waitlist To Visit

Some tourist sites are so popular and exclusive that visits must be booked months, if not years, in advance. From mystical caves in the jungles of Vietnam to jaw-dropping European churches, here’s how to book a visit to six of the best tourist locations with a waitlist.

Outdoors