The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

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

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

This little museum in the town where zombies were born celebrates the living dead.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

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

The crash of this great airship signaled the beginning of the end for dirigibles.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.