Nature's biggest mammal swims in landlocked Oklahoma.

An oil baron's wild paradise and the winner of an ill-fated air race.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A bizarre house filled with an astounding array of collections.

Gods clash with machines in a power plant regenerated as a museum.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

A Gothic cathedral created from volcanic rocks.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

Weird wax anatomical models reside here, as do other anatomical specimens.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

19th century cemetery hidden in Brooklyn's Prospect Park.

A museum dedicated to exhibiting remarkable outsider art.

Xul Solar was an artist of alternate worlds, inventor of languages, and dreamer of utopias.

One of the largest Masonic temples in the world, created at the height of the oil boom in ostentatious style.