An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

Extraordinary sculpture garden created by an eccentric English poet.

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

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

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

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

Sacred Indian temple that’s all monkey business.

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.

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

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

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

The world's only museum devoted to the wonders of fluorescence.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

An eccentric company offers eccentric millionaires the opportunity to have spaceflight-related experiences.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

This fantastical house shaped like a seashell brings aquatic design to architecture.

An urban laboratory.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.