Glass and concrete building designed by Albert Kahn.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district.

Museum dedicated to awful artwork.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

A steampunk wonderland that preserves America's history of industrial innovation.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Budapest's Communist-era statues, banished to the suburbs.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Mosaics, storks, and brothels—this ancient city has it all.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

God's Saharan sandbox of wrath.

Khmer Rouge's high security prison.

A Surreal flight of architectural fancy in Vietnam's Central Highlands.

The premier place to experience the Victorian imagining of the steam-powered future.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A perfect turquoise lake colored with glacier dust.

The glacier tucked within a New Zealand rainforest.

After the devastating 2011 earthquake, historic Christchurch begins to recover, starting with the pop-up Re:START mall.

The winter home of millions of migrating monarch butterflies.