This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Smack in the midst of coal country, this collection provides a peoples' history of Appalachian miners' heritage.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The celebrated eyesore created by starry-eyed sweethearts.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Historians and hobbyists head to this former French outpost for the annual Feast of the Hunters' Moon.

The longest navigable underground river in the United States is home to countless blind and albino animals.

Low-frequency noise compared to an idling train can only be heard by some of this industrial town's residents.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

Display that gathers the basic elements of the universe in one convenient location.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

This stately clubhouse has showcased German-American culture for over a century.

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

These warring psychedelic crags commemorate an unsuccessful military operation.