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

Every equinox this Maya pyramid puts on a spooky ancient light show.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

The stoutest tree in the world.

A church of bones, decorated with 40,000 human skeletons.

Meet the world's longest tapeworm in a collection that really gets under your skin.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

This massive blockhead sculpture hides an entire library.

A blooming house of worship for the masses.

An ancient iron pillar in Delhi that seems to be rustproof.

Made by a man on a worldwide sanitation crusade.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Fifteen Jodhpur queens left their handprints before going to their fiery death.

The world's second-largest sundial, made entirely out of stone.

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

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

Rock-cut cave complex filled with ancient Buddhist artwork.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.