Why trying to get lost in the old quarters of Essaouira may be harder than you think

Gustave Eiffel's masterpiece until the Eiffel Tower was built.

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

This cave complex might provide a link between the Neolithic and the Classical Greek period.

Check the time in 145 countries at once with this East German relic.

An iron dragon with a long neck covered in feathery scales perched above one of Venice's most popular squares.

A canopy trail with sweeping views and a giant tunnel slide.

This ancient Roman town was revered for the healing waters of its sacred spring.

Large-scale operations in these mines ceased in the 1960s, leaving behind crumbling processing facilities and deserted living quarters.

This fifth-century church is one of the oldest Christian sites in the Balkans.

Visitors may notice something strange walking through this quaint German town.

A colossal sculptural lion built by the same man who designed the Statue of Liberty.

One of the most powerful religious centers in the Middle Ages, dubbed the founder of Western monasticism.

The fantastic architectural models of a French traveler.

This church looks more like a spaceship than a house of worship.

A chapel on a volcanic core, marking the end of a successful journey.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

These quaint French houses dangle precariously over a precipice.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A bridge to rival those in nearby Venice but without the crowds.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.