The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

The only castle in North America to ever house European sovereigns.

Likely Mexico City's most eclectic shopping mall, with its own version of the Walk of Fame.

The collection of intricate sculptures includes one carved from a mammoth's tusk

66,000 pieces of art, donated by one of the world's richest men.

Get a privileged view over Mexico City's Historic Center from a terrace right in its heart.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

This museum houses two of Mexico's most impressive Aztec monoliths.

Though much of the castle was robbed of its stones, the underlying earthworks are among the best-preserved in England.

This Victorian graveyard in Leeds is a macabre collection of beautiful tombs and memorials.

The last gas-lit cinema in the United Kingdom, and perhaps the world.

Since 1995, two red-painted metal figures have guarded the entrance to the Northern Ballet.

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.

This giant sculpture made of trash is a critique of society's wastefulness.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Step back in time at this 19th-century kiosk.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

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

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

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.