This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

This sprawling collection of saintly relics includes such fascinations as wood from the Cross of Jesus and threads from Mary's veil.

The seat of Buffalo government is a gorgeous Art Deco palace.

The site of William McKinley's tragic assassination is only marked by an underwhelming boulder.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

Ruins of a once-prized railroad station in New York.

Hiroshima survivor on Riverside Drive.

The "Seinfeld" diner.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

A Gothic-style abode built to accommodate the church's three resident peacocks.