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

Alexander Hamilton’s creation caused quite a bit of controversy.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

These lush botanical gardens employ the most purrfect pest control force.

A daily replay of the experiment that proved the rotation of the Earth.

Behold the rickety glory of one of the oldest roller coasters still standing.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

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

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

An outlandish shoe shaped house built by an eccentric millionaire.

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

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

Yo, Adrian!

The first American department store, and home to the largest operating musical instrument in the world.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

In which a local geological marvel becomes a quaint roadside attraction.

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

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

A rare view of a preserved Victorian science museum.

A toxic ghost town sitting atop a massive coal fire.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.