In Europe, 76 destinations off the beaten path
Looking beyond Rome, Paris or London? Consider Europe's lesser-known destinations, such as Monschau, Germany, a town so quaint you can hardly believe it isn't a theme park or San Marino, one of Europe's oldest and smallest countries (drive through it slowly).
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Giant's Causeway, Northern Ireland( Causeway Coast & Glens )
The Giants Causeway, at the foot of basalt cliffs in Northern Ireland, is made up of 40,000 black basalt columns jutting out of the ocean. Volcanic activity 50 million to 60 million years ago created these step-like columns on the edge of the Antrim plateau.
Three periods of volcanic activity created the different parts of the causeway, also referred to as the Lower, Middle and Upper Basalts; the Middle Basalt portion features the famous hexagonal columns of the Causeway.
The 40,000 stone columns are mostly hexagonal, or six-sided, but some have four, five, seven or eight sides. The tallest are about 40 feet. The thickest can be up to 90 feet.
Read more: Offbeat Traveler: The Giant's Causeway, Northern Ireland
Pictured: The columns of Giant's Causeway.