Roman buildings were engineered with hot mixed, self-healing concrete of quicklime and volcanic ash that strengthens in seawater.
The Hyderabad House in Delhi plays a prominent role in Russian President Vladimir Putin's two-day India visit.
He installed dozens of life-size figures on a beach, where some are swallowed by the surf every few hours. Others stand in ...
From the must-see locations to the most frequently asked questions, our guide has all you need to plan your next visit.
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