This 13th century Gothic brick castle is the largest in the world by surface area.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

Constructed in 1882, this jail once housed local inmates and the sheriff's family all under one roof.

Get buzzed beholding one of the world's largest coffee-machine collections, then step into the café for a specially brewed cup.

One of the oldest seagoing boats in the world can be found at the Dover Museum.

The final resting place of England's most notorious bandit.

Standing atop Wellington Hill is the world's tallest three-sided obelisk.

Over a thousand musical instruments are on display, from bagpipes and harpsichords to drums and the sinuous serpent.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

Keep a lookout for replicas of this wooden soldier hiding in plain sight all around town.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Cavemen, elephants, and eagles greet passengers driving through the town's main intersection.

Atop this former dutch railway office sits an interstellar work of art.

This hill nestled in the Scottish lowlands was a ritual site for over 4,000 years.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

This cubist Vienna church building looks like some sort of alien stonehenge.

An amazing collection of curiosities hidden in a small Welsh village.

These ancient ruins were the final resting place of King Henry II's mistress.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

These legendary stone steps were once used to haul coffins up the rockface.

In the late 1990s, a mechanic and fan bought this iconic sportscar back from the dead.

The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

These little-known sands dunes are a geological anomaly in Saskatchewan's southern prairies.