This skewed English house has looked like it's going to fall over for centuries.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

A museum dedicated to the alleged Roswell Incident.

60 feet of towering steel balances gracefully.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The final resting place of a space program monolith.

The legendary building that needed ghostly approval before being built.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Cemetery featuring rare glass-fronted columbarium.

A hollow cement depiction of time's inexorable effect on the human body.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

These pretty kitties killed and ate as many as 135 railway workers.

A wall of chewing gum moonlights as collective art.