A retrofuturistic art installation in the Pittsburgh Airport.

This steamer is known as "The ship that built Cleveland."

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

The most accurate timepiece in the world.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

One of the best places to see wild Colonial Spanish Mustangs in the United States.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The Boston square dedicated to the dark poet who was born nearby.

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

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

An abandoned stretch of highway, deteriorating next to the operational one.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

It would be a crime to miss it.