Hagia Sophia is the one of the most visited museums and most prominent monuments in the world in terms of art and the history of architecture. It has also been called “the eighth wonder of the world” by East Roman Philon as far back as the 6th century. The current Hagia Sophia is the third construction, done in a different architectural style, even though it occupies the same location as the previous two. The original building was constructed by the most important architects of the period (527-565), Anthemios (Tralles) and Isidoros (Miletus), under the order of Emperor Justinianos. It is mentioned in the resources that during its construction period, the two prominent architects each had 100 architects working under them, who in turn had 100 workers each working under them.

It was used as a church for 916 years but, following the conquest of Istanbul by Fatih Sultan Mehmed, the Hagia Sophia was converted into mosque. Afterwards, it was used as a mosque for 482 years. Under the order of Atatürk and the decision of the Council of Ministers, Hagia Sophia was converted into a museum in 1935.

Hagia Sophia is open for visit every day. The winter visiting hours for the Hagia Sophia are from 09.00 to 17.00, with the final entry being at 16.00. During the summer, the visiting hours are between 09.00 and 19.00, with the final entry being at 18.00. Ticket Price 60 TL

The Sultan Ahmed Mosque is a historic mosque located in Istanbul, Turkey. A popular tourist site, the Sultan Ahmed Mosque continues to function as a mosque today; men still kneel in prayer on the mosque's lush red carpet after the call to prayer. The Blue Mosque, as it is popularly known, was constructed between 1609 and 1616 during the rule of Ahmed I. Its Külliye contains Ahmed's tomb, a madrasah and a hospice. Hand-painted blue tiles adorn the mosque’s interior walls, and at night the mosque is bathed in blue as lights frame the mosque’s five main domes, six minarets and eight secondary domes.

Sultan Ahmet Camii (Blue Mosque) is still a working mosque, and is therefore closed to tourists during prayer time. In general, the opening hours of the Blue Mosque Turkey are from 08:300 am until one hour before dusk each day, excluding 90 minutes each prayer time, and two hours during Friday noon prayers.

One of Istanbul's splendid historical buildings is the Basilica Cistern located in the southwest of Hagia Sophia. This large underground cistern built by Byzantine Emperor Justinian I (527-565) was named as arasında Yerebatan Palace ere among the people due to the marble columns rising from the water and countless seemingly like. It is also known as Basilica Cistern since there is a Basilica in the place where the cistern is located.

Except couple of the edged and grooved columns of the cistern, majority of them are shaped as a cylinder. Two Medusa heads, which are used as supports under the two columns at the northwest edge of the cistern, are the great work of art from the Roman period. What attracts most attention from the visitors is that the structure from which the Medusa heads have been taken is unknown. The researchers often consider that it has been brought for being used as supports to the column at the time of construction of the cistern. However, this has not prevented myths for the heads of Medusa.

Museum is open seven days a week. Exceptionally, the first day of religious holidays is opened at 13.00. Ticket Price: 20 TL

The Istanbul Archaeological Museums is among the most impressive historical venues for your outdoor events and made up of three main units: the Istanbul Archaeological Musuems, the Ancient Orient Museum and Tiled Kiosk Museum. The collection of the Archaeology Museum Turkey’s first museum houses over one million artifacts belonging various cultures collected from the imperial territories. The Archaeological Museum was ounded in June 13, 1891 under the name of Müze-i Hümayun (the Imperial Museum). Commissioned by archeologist, painter and curator.

Museum is open everyday except mondays. The winter visiting hours for the museum are from 09.00 to 16.45, with the final entry being at 16.00. During the summer, the visiting hours are between 09.00 and 18.45, with the final entry being at 18.00. Ticket Price: 30 TL

The Grand Bazaar (Kapalıçarşı) in Istanbul is one of the largest and oldest covered markets in the world, with 61 covered streets and over 4,000 shops which attract between 250,000 and 400,000 visitors daily. In 2014, it was listed No.1 among the world's most-visited tourist attractions with 91,250,000 annual visitors. The Grand Bazar at Istanbul is often regarded as one of the first shopping malls of the world.

09:00 - 19:00 every day except on Sundays and during public or religious Holidays