This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

A memorial to Chinese freedom in the city where American freedom was born.

What may be Boston's finest Art Deco building, located in the city's Financial District.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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

The site of London’s first coffee house has been serving refreshments of one kind or another for 360 years.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

The world's largest rotating world.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

An abandoned gun-funded 19th century utopia.

A tiny memorial for the year the Connecticut River almost destroyed New England.