This unique sanctuary invites you to interact with the beautiful birds.

The smallest Mexican land grant in California was given, and then taken from, a 19th-century teacher and nurse.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

Educational foundation that teaches the powers of fourth dimensional physical properties.

Tijuana's legendary jai alai or "basque ball" palace is now a massive music venue.

It would be a crime to miss it.

The tiniest tiki room in San Diego.

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

This basement museum explores the art and artistry of fascism.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

This unusual elevator doesn’t stop or slow down.

This bronze statue of Martin Luther King was placed in the park without permission.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

A popular rock that acted as a waymarker for American pioneers.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

Native Americans built this circle of stones, which was used to predict astronomical events.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.