Three hundred years of preserved Spanish colonial history in San Antonio.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Formerly a lovely white sand beach this Hawaiian stretch is now a trap for countless tons of trash.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

A controversial memorial at the place where Captain Cook met his violent end.

This legendary urban waterfall creates a dazzling display of rainbows.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Watch the newest land on the planet form before your eyes.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This black shoreline is made up of exploded lava particles.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

A diorama of the Civil War, fought by cats.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

This collection honors the iconic, and proudly American lighter that just won't quit.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

World's first "penitentiary," meant to be humane, drove men insane.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.