This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

A monument marks the location of the first successful steamboat demonstration.

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

Journey through a collection of over 35,000 Halloween items from all generations.

Hundreds of protractors affixed to surfaces all over the city.

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

One Pittsburgh musician's decades-in-the-making memorabilia collection is on display at this rock-n-roll curio shop.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

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

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

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

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.