Ancient burial grounds of the wealthy.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

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

A beautiful but toxic fountain of mercury.

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

The "Mystery and Company of Merchant Adventurers" is an Elizabethan-era hangout in Moscow.

This working class sculpture pounds his hammer all the livelong day.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

The park that the Chicago Stockyards built.

The oldest experimental corn field in America is still creating better ways to grow crops.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

A classically inspired temple in Redwood City.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

Guarded by the Angel of Grief, the Stanford family tomb attracts an odd mix of halloween revelry and somber contemplation.

The world's most famous donkey lives in this pen.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

San Francisco Bay's ghost town.