A bit of retro transportation flair preserved in the world's largest department store.

This small stone building, the final work of a renowned artist, offers a peaceful environment with radiant, colorful glass windows .

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Continuing the tradition of the dime museum in style.

An exquisite grouping of structures made from 10 tons of invasive saplings.

A high-octane shrine to the greatest Texans who ever lived.

A former electrical substation is now home to an eccentric junk art masterpiece.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

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

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

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

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

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

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 largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

A retrofuturistic art installation in the Pittsburgh Airport.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

This smiling statue memorializes local cartoonist Bob Montana and his legendary creation.

A miniature city within a city, complete with traffic signs, signals, and streets to teach Baltimore's youth traffic safety laws.

The only public swimming pool in Baltimore open to Black Americans during segregation is now a permanent memorial art exhibit.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.