This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

A striking steel sculpture that was moved to an out-of-the-way location.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Immortalized in bronze, this frazzled student will be glued to his screen for centuries.

The historic single-screen movie theater is one of only four cinemas in the world to screen films in VistaVison format.

A six-story-tall golden pyramid, surrounded by a moat.

The buildings around this DePaul University statue create an echo chamber for those standing in the center of the circle.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

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

A historic 1929 art-house cinema that features independent, classic, cult, and foreign films in an atmospheric setting.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Check the time in 145 countries at once with this East German relic.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

An intersection between architecture, industrial construction, machine, and scientific instrument.

A monument to the man who almost killed Hitler.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".