Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Beloved bar home to musicians of all eras and reputations.

A European-style bath house in Chicago.

Combination beer garden and music venue in the heart of Wicker Park.

Internationally known record store and purveyor of "dusties."

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

A Museum of Holography frozen in 1974.

Home to a protest movement, a bombing, and a dramatic change in labor history.

An unfinished rail tunnel that has since been used to house cheese and bats.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The "Prussian Versailles" that is as glorious today as when it was built.

Cold war icon and onetime "hole" in the iron curtain.

A restaurant and observation deck built in a unique broadcasting antenna.

The most visited, and possibly most controversial, museum in Germany.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

A fitting attraction for the corn capital of the world.

Go inside to really appreciate this 500-year-old technological masterpiece.

Island wonderland for communist autocrats.

A miniature train-ride through Slovenia's largest cave system.

The "dragon babies" of southeastern Europe.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

A spiritual vortex among the red rocks in Sedona.

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.