An obelisk commemorating Lincoln's role in connecting the coasts.

A museum chronicling pioneer life constructed over Interstate 80.

A miniature baseball stadium honoring Johnny Rosenblatt Stadium, home of the College World Series from 1950-2010.

An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

This was the first homestead registered after President Abraham Lincoln signed the Homestead Act into law.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

This landmark cemetery in Boston was created more than 300 years ago.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Radical Bookstore and Community Space.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The site of the deadly Triangle Shirtwaist Factory Fire.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The first piece of public art dedicated to LGBT rights.

You must take the A train... to the last active cemetery in Manhattan.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.