Hue Imperial city and Citadel

This is the entire reason you're visiting Hue. From 1802 to 1945, Hue was the capital of Vietnam and home to the Nguyen dynasty. The Imperial City is a UNESCO World Heritage Site and the citadel was …

Hohensalzburg Fortress

This fortress sits on a cliff 400 feet above the city of Salzburg. Walk up mostly for the spectacular views over Salzburg and wander the mildly interesting exhibits on war.

Castello Maniace

The fortress at the southern tip of Ortigia offers beautiful views of the surroundings ocean as well as interesting historical exhibits.

Dun Aengus (Dun Aonghasa)

This is an evocative and impressive site. Perched on a 300 foot cliff overlooking the Atlantic ocean, Dún Aonghasa is the largest of the prehistoric stone forts of the Aran Islands. The fort consists of three massive dry-stone walls and a chevaux-de-frise, a dense band of jagged, upright stones, surrounding the fort from cliff to cliff, designed to impede attackers.  Originally constructed c.1100BC, it was re-fortified around 700-800 AD.

Agra Fort

A massive, beautiful fortress built primarily from red sandstone. The Mughal emperor Akbar rebuilt the fort in the mid-1500s; 4,000 laborers worked on the fortress for eight years, finally finishing i…

Amer Fort

Set high on a hill above Jaipur, Amer Fort is a massive and beautiful fortress with huge ramparts, winding paths, and a hall of mirrors based on Versailles's. It's a must-see if you travel to this par…

Devgiri Daulatabad Fort

Daulatabad, also known as Devgiri, is a fortress dating to the fourteenth century. It's an incredible, multi-level defense system. The fortress has a main entrance at the base of a hill. Within the th…

Suomenlinna

Suomenlinna is an island off of Helsinki. It's the site of a fortress built in 1748 to protect Finland's capital from Russian aggression. The island is beautiful, and you should be sure to spend a morning or afternoon exploring it.