Temples adorned with intricate, erotic sculptures make up one of the "seven wonders" of India.

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

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Eighty million natural history specimens call this gargantuan museum home.

A statue representing a lost Roman profession that was vandalized for centuries.

This curious, round temple is the oldest still-standing marble building in Rome.

Architectural monsters are devouring this palace's every door and window.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

Commonly acknowledged as the only public monument to the Devil himself.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

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

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This densely-packed cluster of buildings was saved from the wrecking ball and turned into an art community.

Memorial to the father of the Republic of China.

Enormous pendulum helps keep Taiwan's tallest building from swaying.