San Francisco's oldest surviving monument and meeting place for 1906 survivors.

The Fox Sisters, America's leading mediums in the mid-19th century, possessed a table they claimed helped them "communicate" with the dead.

This fairytale-inspired cottage was created by a university literature professor.

This floating cinema brings new meaning to the phrase "going out" to the movies.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

One of the oldest libraries in England, and one of the last of the great medieval chained collections.

These spooky and unusual stone formations create an underworldly landscape.

An Englishman loses his scalp to a Cheyenne warrior and lives to donate it to a library.

Visitors to this library are in for a real-world education in modernist architecture.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

This three-chambered cave is the only protected natural bat hibernaculum in Quebec.

Aqua white sand highlighted with fiery red rocks.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A naturally beautiful, seemingly bottomless deep blue spring.

A whimsical bridge adorned with decorative dragons.

A modern English garden of eccentric beasts, follies, and oddities.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

A world-class collection of mechanical musical instruments and automata.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Eighteen miniature death-scene dioramas.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.