Pivotal home of Nobel Prize winner Pablo Neruda.

A beautiful deserted greenhouse in the middle of a park.

What was once a unique system of urban elevators is turning into a mechanical ruin.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

This black shoreline is made up of exploded lava particles.

A chilling monument to Korean patriots who resisted the Japanese occupation.

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

A cluttered and astounding collection of antiquities and curiosities.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Elaborate tile work in this railway station tells the story of Portugal.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

An exquisite collection of fairytale conveyances that puts most car museums to shame.