This stunning concert hall has become a symbol of Iceland's national recovery.

Three columns of volcanic rock shoot out of the ocean.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

An encyclopedic collection of mammal penises.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

What was once the largest NFL stadium.

One of the few working locomotive roundhouses in the United States.

This solemn facility remembers the cruel effort to compel Native American children to relinquish their culture.

This resort community was known as the "Black Eden of Michigan."

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

The birthplace of the Ford Model T is now a museum full of antique cars.

Where the Model T was made and the assembly line was invented.

Glass and concrete building designed by Albert Kahn.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

The world's largest commercially available hamburger is complete with 15 pounds of lettuce, 30 pounds of bacon, and 36 pounds of cheese.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Over a thousand feet beneath the Detroit streets is a subterranean metropolis few are allowed to enter.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

World's largest Christmas store.

Detroit’s downtown castle is one of the oldest structures in the city.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.