Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

The oldest playground in America.

This old mill and former police station now present a world-class collection of Orthodox iconography.

The oldest surviving wood-frame building in North America is still in the family.

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

No one really knows how these old hobby horses got here, but the herd keeps growing.

Three prestigious academic collections come together to create a world-class natural history museum.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

The massive machine creates cracking displays of indoor lightning.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The largest drain hole in the world.

Visible below the waves are memorials to the city's Gold Rush dead.

Tiki luxury on Nob Hill.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

FDR's Art Deco hospital tower was hopelessly inefficient.

A relic of FDR's brief foray into utopian urban planning.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

Introducing the Green Fairy to her fawning masses.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.