The longest non-mortared wall in the country is one man's tribute to his displaced Yuchi ancestor's five-year journey to her homeland.

The final resting place of the last "gypsy king" of Poland.

Modern art commemorates one of the first military actions of World War II.

Once home to some 250,000 volumes and priceless art artifacts, this Polish estate was a target of bombing during World War II.

An impressive monument to Poland's independence.

This lakeside bunker complex in Mamerki, Poland, housed the Supreme Military Command of Nazi Germany during World War II.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

Hundreds of notes give thanks to the patron saint of lost causes.

This medieval church tower has maintained its clockworks since the 16th century.

A mysterious shape catches the eye in this 16th-century painting.

England's most famous front door has an accidental doppelganger.

Murals of the wild parties once held on the frozen River Thames.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

The last four extravagant street signs of London's historic banking street.

Explore nearly 400 years of English middle-class home life.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.