Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

Experience a charming 1930's version of "infotainment."

The drama of nature in full effect in this Nevada State Park.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

This quiet park's strange sedimentary spires were named after Kodak's color film.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Despite its name, this route in southern Utah offers a heavenly day trip.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Legends surround this jagged rock formation in the New Mexico desert.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

This massive blockhead sculpture hides an entire library.

Single runway interrupted by a busy road that cuts across its middle.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The stunning interior of this Gothic church is covered in ornate gold details.

Giant topiary dog once played a role in a terrorist bomb plot.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.