A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Brass bricks outline the locations of Edinburgh's lost, lively market stalls.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This stately bank building hides a spectacular star-studded ceiling.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

Neon artworks light up this dark Edinburgh tunnel.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

A roadway designed for a visiting monarch.

This sculpture of disembodied body parts forms a poignant memory of the horrors of World War II.

Poetic, metallic giraffes adorn a square off an Edinburgh thoroughfare.

Edinburgh’s version of the Sistine Chapel is this former church, with an interior covered in paintings done by one woman over the course of nearly a decade.

A colorful mural decorates one of the city's oldest animal shelters.

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

This Brazilian palace island was once the site of the last grand ball before revolution.

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

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

Its collection details the experiences of the largest Japanese community outside Japan.

An enigmatic mural hiding in plain sight in one of São Paulo's busiest metro stations.

This massive waterfront market is located at the "gateway to the Amazon."

An old Dutch lightvessel is now stuck in a dock near the mouth of the Suriname River.