Eat the ultimate iteration of Portugal's most beloved pastry.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

The original version of Porto's most famous sandwich is just as good here as it was a century ago.

A beautiful Victorian-era cemetery, complete with a miniature village.

Narrowest house in Boston.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A public work of art that also provides some relief from the summer heat.

When this monument to Slovenia's national poet was erected, it's said to have sparked the ire of nearby church authorities.

Sample port and quinine-fortified wine at this fourth-generation winery near Porto.

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

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

Picturesque basketball courts sheltered by historical defensive walls and with an enviable sea view.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Time travel with sweets across history at this research-based candy store.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

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

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

Gargoyle head that brings good luck.