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

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

The corpse bride of Portugal.

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

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

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

Perhaps the most spectacular grotto along the Algarve coastline.

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

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

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

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

Singapore's landscaping project is home to 18 incredible Supertrees.

Ancient serpentine sacrifice holder that has stood the test of time.

The ornate miniature mansions were built for Istanbul's feathered residents.

Dedicated to the victims of a phantom slasher, this memorial is claimed by some to be the source of a deadly curse.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Fine dining in the bizarre world of Lewis Carroll.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

A memorial to those who died at the hands of the Kuomintang while fighting for communism in China.

A small gallery and shop dedicated to an ancient style of hand-printed textile.

The once highest point in China blends symbolic design with a kick of adrenaline.