All of Chicago's wood-paved streets are long gone but two alleys remain.

G.V. Black, the Father of Modern Dentistry, keeps an eternal eye on Chicagoan’s teeth from his perch in Lincoln Park.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

The sign to a demolished amusement park now stands in front of a local library.

A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

The young Black revolutionary was killed before getting to see a non-segregated pool in his hometown.

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

Julia Buccola Petta's body was peculiarly well-preserved when it was exhumed six years after her death.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

This overgrown Illinois water park offers a whole new type of adventure.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

France's most famous cemetery, with some of its most curious tombs.

A source of civic pride, though the reason for its construction is unknown.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

This house renovated by Frank Lloyd Wright was the centerpiece of a lavish 20th-century estate.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

This cemetery is all that remains of a school for "wayward" girls.

First planned industrial community in the United States.