Reviewed on Sep 30, 2025
Once a church, then a Byzantine cathedral, later a mosque and now a monument, this iconic building is a national treasure.
You can study the exhibits at Hagia Irene, a museum with a storied past, during your trip to Istanbul. Discover the area's fascinating museums and stunning cathedral.
Fountain of Sultan Ahmed III is just one of the places to see in Istanbul, so why not enjoy the other things to explore during your travels? Stroll along the area's seaside or experience its fascinating museums.
The “Sunken Palace” is one of the most striking remnants of Byzantine Constantinople and is the largest of hundreds of ancient underground reservoirs in Istanbul.
You can browse the exhibits at Istanbul Archaeology Museums, a museum with a story of its own, during your travels to Istanbul. Stroll along the seaside or visit the stunning cathedral in the area.
The official residence of the Ottoman sultans for about four centuries is now accessible to the public and home to sacred relics.
