A family-run botanical garden with tropical plants, artsy sculptures, and eccentric buildings.

A monument to the 16th-century mathemetician who dedicated his life to calculating the numerical value of pi.

The first crematorium in the Netherlands.

Various sculptures are a rotating exhibit in this small town.

An enormous Polaroid picture adds an artistic flair to Rotterdam.

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

A storybook church made from a mesmerizing medley of multi-colored stones.

For decades, this waterfall remained hidden because of an artificial dam.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This series of Scottish caves has no clear purpose other than baffling historians.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A hands-on traveling collection of the innovative devices of yesteryear.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

Two adjoining collections of 19th-20th century physics apparatuses and instruments.

After over 100 years out of service this landmark windmill once again turns as a symbol of Jerusalem's self-sufficiency.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.