A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

The world's oldest continuously operating airport was founded by the Wright Brothers.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

The oldest public library in Ireland.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A towering Art Deco movie palace made to look like a Mayan temple.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A curious collection of miniatures in a quiet corner of the Chicago Children's Museum.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The 606 is a decade in the making.

A hot dog stand where the heads are just as hot as the dogs.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A display of magnificent stained glass windows is the first exhibit of its kind.