Defensive fortification

A Castle Nestled in a Cave, Nature's Fortress

Postojna,Slovenia

Majestic Fortress Amidst Rugged Hills

Udaipur,India

A Medieval Marvel of Stone and Grace

Avila,Spain

Breathtaking views from an ancient summit

San Marino,Italy

A Time-Honored Bastion of Cultural Heritage

Jinzhong,China

A Timeless Beacon of Historical Mystique

Baku,Azerbaijan

A Miniature Version of the Great Wall in Europe

Sintra,Portugal

A Symbol of Maritime Glory and Historical Might

Lisbon,Portugal