Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

A graffiti Mecca welcoming artists from around the world.

The 28-foot granite map plots the locations of 40 theaters in New York City.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Few of the many visitors to this resort town know of its hidden Maya ruins.

After this historic church was destroyed by World War II bombing, its blackened shell was left standing as a monument.

A beautiful example of 18th-century engineering still standing tall.

Where sweethearts leave their love locks in the Uruguayan capital.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

This historic stadium was built to host the first-ever FIFA World Cup.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

This stunning mass of ice spans 121 square miles and is still growing.

A bright little alley in La Boca is a part of tango history.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

Swedish skyscraper with a 90° twist.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

A roadway designed for a visiting monarch.