Learn about the history and craftsmanship of carousels inside this museum located in a former post office.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Faces carved into the cliffs create an otherworldly walking trail.

This small shrine is dedicated to the designer of the first Russian fighter jet and his brother, who became Chairman of the Presidium of the Supreme Soviet.

With over 10,000 lights, this engineering marvel lights up the city after dark.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

You'll find just about anything in this funky Tbilisi flea market.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

One of the oldest of its kind.

This elaborate towering structure was once famed for its revolutionary height.

A rare view of a preserved Victorian science museum.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

Once used to screen films for theater owners to rent, this historic building is now a start up hub.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

Known locally as "the giant head," this 14-foot LED sculpture has a photo booth in the neck where you can have a 3D picture taken and displayed.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

This steamer is known as "The ship that built Cleveland."

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.