Strange physical sensations and optical contradictions keep visitors coming back for more.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

As its grandiose name implies, this wooden dome is unsurpassed in size.

The park is home to the United States's only still-operating Dutch windmill.

The first artificial white water river course in North America cuts right through an Indiana city.

Nature and art meet in this curvy creation

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

The building is topped by a Statue of Liberty statue whose torch has stayed burning since the museum opened.

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

A park where you can watch the highway zoom past.

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

The largest historic preservation organization in the United States.

This multisensory alley has the ability to remind bustling citygoers to stop and smell the roses.

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

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

At the top of the hour, this steam-powered clock's eight brass whistles play "Back Home Again in Indiana."

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

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

A technicolor place of worship for Elevationists.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

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

Both funky and traditional, it's the oldest of its kind in Indiana.

An antiquated German apothecary on Chicago's North Side.