Since 1916, the National Park Service has safeguarded America’s treasures from sea to shining sea and everywhere in between. This National Park Week (April 19 – 27), we’re tipping our caps to the dramatic and mysterious places where natural beauty shines brightest.

TRIVIA TIME!

Think you know South Dakota’s national parks and monuments? Well, let’s see if you were paying any attention on those ranger-led tours.

Once an ancient seabed, this surreal national park is one of the world’s richest fossil beds.

This national park site makes up 100 miles of the longest river in North America.

Most famous for what goes on below ground, this national park is home to bison, elk and 150+ miles of mapped caves.

This national park unit is known for a sizzling mineral called “cave bacon.”

The idea for this monument was first conceived in 1923. It took years of work before the project’s declared completion in 1941.