These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

Eclectic collection of rare and beautiful stones in a historic home.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

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

The only Bahá'í house of worship in North America and one of only a handful worldwide.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

This hilarious English intersection is an automotive whirlpool.

This Victorian graveyard in Leeds is a macabre collection of beautiful tombs and memorials.

Huge winged monument in the United Kingdom.

Don't be fooled by this fake medieval facade even if it is almost 300 years old.

One of the largest megalithic complexes in England, which local legend holds is a wedding party turned to stone by the Devil.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Two plaques commemorate the site of Shakespeare's first theatre.

A friendly pub with a sordid past in cock fighting.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

Scattered throughout London are ancient remnants of the city's former bounding wall.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Famously misunderstood wonder of the ancient world