This pun was simply waiting to come to life, and one defense contractor made it so.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

At 207 feet, one of the world's longest continuous escalators.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

The resting place of a Civil War celebrity's amputated limb.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This public park was the site of the largest civilian disaster of the Civil War.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

There aren't too many operational funiculars around, but Pittsburgh has two!

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

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

The "Seinfeld" diner.

A bit of retro transportation flair preserved in the world's largest department store.

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.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

A massive Montreal stadium that has seen nothing but trouble since its inception.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The school tested mustard gas for the U.S. Army during World War I.

Go take a picture with the inventor of the daguerreotype photographic process.