With its multiple levels and twisting corridors, the Governance Complex would make a formidable stronghold, almost impenetrable to anyone who did not have an accurate map.

Heusden now draws over 350 thousand tourists every year who visit the historic town centre and walk the walls that once made it a formidable stronghold.

It was a formidable stronghold against raiding forces that desired Nizwa's abundant natural wealth and its strategic location at the crossroads of vital routes.

He described it as a formidable stronghold.

Despite its stark beauty, it was a formidable stronghold, obviously the domain of a warring clan.

"Many attacks that were directed against strongholds more formidable than the one in which Lucien Partridge now barricades himself."

That two-hundred-year-old fortress was an altogether more formidable stronghold than the city, though its very size made it vulnerable, for the fort's garrison, like the city's, was much too small.

The city of Ahmednuggur has grown so much that most traces of its wall have now been swallowed by new building, but the adjacent fortress remains and is still a formidable stronghold.

He needs to find his old enemy, Kjartan, a renegade Danish lord who lurks in the formidable stronghold of Dunholm.

Rowdy Kirshing, here in gang land's most formidable stronghold, was a big shot no longer.