A mysterious bridge over a sunken Roman road.

Medical museum focused on antique anesthesiology equipment.

Tucked away amongst townhomes lies a restored, early 20th-century tea house and garden, the only remains of a historic estate.

A hidden grotto on the grounds of the Kane County Government Center.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

The arboretum whose marshy soil sucked up the dreams of housing developers.

This cave holds a surprisingly colorful variety of geological oddities.

This pebble beach is so beautiful that taking its rocks is against the law.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This storied music venue was once a tavern that housed an Italian Anarchist book club and prohibition parties; today it's a community space for artists and musicians.

A unique botanical garden housed in three giant geodesic domes.

A place to eat for on-the-run agents and espionage enthusiasts.

Eclectic collection of rare and beautiful stones in a historic home.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

This lush 12-acre site was once named the finest Japanese garden in North America.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

This former nursery supplied plants for the creation of Chicago's largest park.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

Illegal drag racing two stories beneath Chicago’s streets.

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

This shop for all your super spy needs hides an educational secret.

The beloved home to all publications indie, erotic, and punky.