This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

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

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

Springtime is go time for this repurposed shack and the fish it venerates.

San Francisco’s century-old Christmas Tree.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This church is dedicated to the patron saint of seafarers.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

This strangely amalgamated museum explores the history of the Timex clock company as well as archaeology.

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

The largest collection of historic military firearms in the United States.

A single room pays homage to the prodigious achievements of the 30th President of the United States.

Memorial to one of the most fatal fires in both circus and U.S. history.

This roadside attraction attracts kids with dinosaurs before blindsiding them with geology.

What appears to be an act of fruit vandalism is actually a cultural statement.

Dedicated to the victims of one of the deadliest hurricanes to strike the United States in recorded history.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

Cryptic messages embedded in the New York City sidewalk.

An artist's cute bronze subway sculptures belie his violent artistic past.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

A garment factory hides a small Dominican eatery in the hallway to its freight elevator.