A curious collection of miniatures in a quiet corner of the Chicago Children's Museum.

This small, but long-running hobby club has built one of the largest model rail lines in the US.

These mansions date back to Chicago's days as a brewer's paradise.

An avant garde art museum at the University of Chicago.

A European-style bath house in Chicago.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

When it comes to handsignals (and colonialism) rock always beats scissors.

There's a crumbling old mansion inside the Smithsonian National Zoo.

The only tennis court that falls under the jurisdiction of the central bank.

A historic ruin just 20 feet away from a busy highway onramp.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

See six states, pickled freaks, rocks, and antiques.

A downtown park built on top of unclaimed graves.

Curios, scientific antiques, oddities for sale.