Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Huge abstract sculptures of the Puerto Rican Flag.

G.V. Black, the Father of Modern Dentistry, keeps an eternal eye on Chicagoan’s teeth from his perch in Lincoln Park.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

This historic hotel invented the chocolate brownie.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

Known as the "Kissing Bridge" for its privacy, it also happens to be the last covered bridge in Ontario.

One of the last remaining covered bridges in the province of Ontario.

The artwork commemorates the many ways 20th-century people perished while on the clock.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

This Buffalo museum hides an Art Deco gas station designed by Frank Lloyd Wright.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

An arresting temple full of mosaics as colorful as the politician they memorialize.