One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Reputedly based on the tomb of Jesus Christ, this crypt is the oldest surviving structure of any cathedral in England.

This device was crucial to the Industrial Revolution development of Leeds.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

A hands-off space for graffiti artists to hone and display their skills.

This underpass became an unlikely piece of cinematic history after its appearance in 'A Clockwork Orange.'

One of Mexico's youngest major cities still holds on to this structure representing its short modern history.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This stone marker honors the man who released Canada goose goslings in Fort Collins, Colorado.

This Chinese-style quartz sundial was saved in its final hour.

A multiversal transit station located right below a highway interchange.

This sidewalk tribute honors Colorado's great culinary creation.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

What better place to take a seat?

A 20-foot-tall egg painted in a traditional Czech patterns by the Czech community in Wilson, Kansas.

Massive still life just off the highway in Kansas.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

Like Stonehenge, but with boats and oodles more charm.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

After miraculously surviving a giant flood, the 19th-century nut tree and its offspring are protected with their own tiny park.