Tucked between a side street and a theater, this arch once led to a prestigious riding school, and now opens to a courtyard and community garden.

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

Boats must transform into railroad cars to navigate this Polish canal.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

Several 12th-century ruins can be found inside this historical market.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

The site of the first battle of World War II.

Where the sleeping monsters of Scotland's oil industry are left to rust.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

Scotland's only funicular railway is also the United Kingdom's highest.

This single-track road rewards brave drivers with stunning Scottish scenery.

This waterfall is one of the most spectacular natural features in the Scottish Lowlands.

A pub that is literally in the middle of nowhere, but continues to do business.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

A sweet symbol marks the place where torturous executions were once carried out.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.