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

This spacecraft-shaped water tower is only a part of the mysterious UFO mania in this Brazilian town.

This singular art museum in São Paulo is unique inside and out.

A labyrinthine museum chronicling the history of African culture in Brazil.

Beautiful public park off the beaten path and away from tourists.

The ruins of this Brazilian island prison still bear the scars of the bloody rebellion that closed it down.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Ancient catacombs form the foundation for this Rococo orgy of a church.

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

A hidden three-foot-wide house separates these two regal churches.

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

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

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

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

Dead weights honor the dead of Portugal's fishing industry.

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