Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

The world's brightest bioluminescent bay.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

These abandoned grain silos and tunnels are an urban exploration dream.

A 19th-century horse lover's bequest led to the construction of this unique fountain in Chicago.

These pretty kitties killed and ate as many as 135 railway workers.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Where dioramas can follow you home.

To find the "unicorns of the deep" you've got to go downstairs.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This historic hotel invented the chocolate brownie.

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

A memorial for an outsider theorist who believed that the planet is actually hollow.

Inside, ancient treasures. Outside, modern contradictions.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

The oldest brick house in the state of Ohio.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

Unique tower has outlasted a takeover of the company.

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

A small museum in the Bay of Pigs gives the Cuban perspective on the famously failed U.S. invasion.