This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The first green space constructed on an elevated viaduct.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Paris' linguistic guide to the international language of, yes, love.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

One of the largest underground systems runs under Canada's largest urban center.

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

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

A 125-meter long "tribute to the Brazilian people."

A stunning Catholic cathedral built by a curve-loving communist in Brazil’s newly created capital.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

A Tudor-style castle in Brazil holds one of the world's largest armory collections.

Known as the "Finger of God," a dramatic rock formation resembles a divine hand extending towards the heavens.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

Beautiful public park off the beaten path and away from tourists.

What killed this humpback whale is a mystery, but its remains have become legendary.

Plagued by riots, celebrity injuries and a tragic death, this amusement park has been demolished.

This "Little Finland" started as a Finnish utopian society in Eastern Brazil.

This Brazilian town built by Freemasons is full of colonial Masonic architecture and symbolic imagery.