Building owners can take out tiles for free at this repository for historic building materials.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

Perhaps the most spectacular grotto along the Algarve coastline.

A unique seaside cave where Aleister Crowley faked his own death.

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

This small chapel is built of human bones and decorated with a golden skeleton.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

The world's oldest bookshop still in operation.

Houses are tucked between, on, and underneath giant boulders.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

In this desolate valley resides a gorgeous set of rocks sporting a technicolor design.

Hidden behind mountains in Morocco, a remote town hides a thriving surfing community.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

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

Traditional 11th-century outdoor tannery.

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

This vast masterpiece of Moroccan architecture spreads across 20 acres.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

The other side is actually green.