This former Indiana quarry has been transformed into a park and SCUBA site where divers can explore the drowned mining equipment.

The world's largest collection of mechanical puzzles is a cornucopia of analog bafflers.

The bespectacled, cocktail-sipping pachyderm is a strange but fitting liquor store mascot.

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

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

This mysterious hill seems to pull objects uphill.

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

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

A medical facility that has been kept frozen in time.

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

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

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

The world's largest anatomically accurate brain sculpture.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Abandoned concert venue legendary for its rock counterculture.

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

Ornate limestone building now filled with geologic specimens, and more.

If astronomy had a ghost, it would look like this observatory.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.