According to legend, you must remain completely silent while passing this man-made mound or suffer the consequences.

Multiple waterfalls and several historic CCC buildings anchor this state park in Oregon's Willamette Valley.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

The wooden airship was the largest flying boat ever built.

Home of Howard Hughes' Spruce Goose.

This charmingly homemade amusement park has been growing for 40 years.

This Oregon farm is dedicated to teaching people the professional art of tree climbing.

Here, cows that make vodka are treated like celebrities.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

The Guardian of Tallinn.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.

The grassy landscape is home to the world's last truly wild horses.

Enormous statue of the Emperor of the Mongols.

This Himalayan airport provides one of the most difficult landings in the world.

This penis-focused monastery is dedicated to Buddhism's "Divine Madman."

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

This giant Buddha statue has 125,000 smaller Buddhas hidden inside it.

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

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

This 46-foot-tall carving of a legendary Māori navigator can only be visited by boat.