What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

This titanic Catholic church in Chicago is also a refuge of the fictional cult-favorite wizard detective Harry Dresden.

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This secluded walking trail is a hidden gem of a Pittsburgh park.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

A unique workspace where offices reside on pirate ships and inside gingerbread houses.

Pittsburgh's literal underground railroad.

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

The last street in Pittsburgh that's paved with wood.

Hundreds of protractors affixed to surfaces all over the city.

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

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.

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

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

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

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