An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

This 1960s kinetic artwork has been restored and is once again whirling away in downtown Minneapolis.

A giant Troll lurks under one of Seattle's oldest bridges.

A walk through the historic city center, under the streets of Seattle.

A museum dedicated to the history and exploration of both popular music and science fiction.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A nondescript Seattle restaurant inherited a piece of European history.

This working class sculpture pounds his hammer all the livelong day.

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

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

The world's oldest bookshop still in operation.

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

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

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

Get in line for Lisbon’s most famous sandwich.

Sip cherry liqueur at a bar dating back to 1840.

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

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

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