This artificial archipelago was supposed to resemble a map of the world.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Ozymandias’ time-keeping temple.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This interactive sculpture allows visitors to leave a message in case a friend passes by.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.