Reviewed on Dec 16, 2025
Reviewed on Nov 10, 2025
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 find out about the history of Istanbul when you stop by German Fountain. Stroll along the seaside or visit the notable monuments in the area.
Learn about the local history of Istanbul when you spend time at Tomb of Sultan Ahmet I. Add the area's stunning cathedral or notable monuments to your travel plans.
Once a church, then a Byzantine cathedral, later a mosque and now a monument, this iconic building is a national treasure.
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 nickname of this 17th-century structure refers to the brilliant color of its tiled interior.
