Menacing or in memoriam, the Silent People and their meaning are left to interpretation.

An alien church provides much needed silence in the midst of a Finland shopping center.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

A vast city of the dead, where the deceased outnumber the living by more than a million.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

The rest of him lived another 61 years and was buried elsewhere.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

This quaint archive of the silent era preserves and pays homage to a seminal moment in film history.

From the Difference Engine to the Cray-1, all under one roof.

An Aladdin's cave of old Silicon Valley tech.

This restaurant's marvelous musical machines include a self-playing violin.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

The restored and active Victorian-era final resting place of San Francisco.

A monument to the love people have for their pets.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

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

Hidden beneath the streets of London is a secret subway that only carried mail.

A passage grave used in neolithic rituals.

An intricately decorated tiny place of worship.

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

The first island in the world designated a light-pollution-free astronomical observation point.