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.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

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

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

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

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

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

First a root beer ad, then a golf course clubhouse, and finally a massive teapot.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

A private residence adorned with a gorgeous mural dedicated to the buzzing insect.

This defunct, fortress-like prison has been the setting for several movies.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

Rare videos and memorabilia await visitors inside this unique store.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

A replica of where the Last Supper was held.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

Louise Bourgeois' 30-foot-tall steel spider sculpture.