Rising from the sea like a stone monster.

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

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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

A beautiful geyser under environmental threat.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A walk through the historic city center, under the streets of Seattle.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Medicinal spa created with the discharge from a geothermal energy plant.

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

One of the last functioning antique elevators in Chicago.

Wisconsin's most celebrated export gets the royal treatment on I-94.

This midcentury chapel is a bold architectural statement and a symbol of Indiana's Lutheran heritage.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

More than 8,000 drinking jugs say “Cheers!” to a guy named Toby.

Chicago's North Park Village was once the largest municipal sanatorium in the country.