A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

The oldest known university in the world is in Fez, Morocco.

The legacy of a Moroccan Jewish community is remembered at this little mouldering cemetery.

The other side is actually green.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Crumbling necropolis set high above Fez.

God's Saharan sandbox of wrath.

Traditional 11th-century outdoor tannery.

A mythical garden that once grew the golden apples of wisdom is said to have existed in this ancient Moroccan city.

One of the most spectacular canyons in the world.

Mosaics, storks, and brothels—this ancient city has it all.

Founded as a refugee camp, now a popular tourist spot.

Morocco's Argania trees are infested with nut-hungry goats.

Vast stretch of tide-pools with a unique Moroccan charm.

A fortified city, home to a remaining population of five families

The remains of a magnificent medieval fortress that was the capital of a vast empire.

Morocco's largest Jewish cemetery.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

An eerie former warehouse turned cistern turned movie set.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

An ancient knight and a symbol of the city's freedom.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

Where the lovelorn find a home for their sentimental keepsakes.