Empress Goharshad, the wife of a monarch of the Timurid dynasty in the 15th century, ordered the construction of the Goharshad Mosque. It was once a free-standing mosque, but it is now part of the Imam Reza shrine complex and serves as one of the prayer halls, with a bustling courtyard. The azure dome contrasts well with the gold cupola next door, and the walls are adorned with magnificent Thuluth inscriptions, making it a unique specimen of Islamic architecture.

The holy shrine of Imam Reza is a complex of shrines, domes, finials, Ravaghs, Basts, courtyards, porches, mosques, and Saqakhanehs, all of which are architecturally significant. Astane Qods Razavi is also a complex of holy shrines, systems, institutions, cultural, industrial, agricultural, and therapeutic institutions, all of which rely on pilgrims' vows and endowments for their administration and management.

The blue-hued tiled walls of Esfahan's Jame Mosque, one of the country's best, radiate an almost heavenly feel. While it's known for its Islamic calligraphy, open Iwans, unique acoustics, and symmetrical arcades, it's the domes that tend to draw tourists, with many lying down to see the mosaics without straining their necks.

The 19th-century Agha Bozorg Mosque is one of Kashan's must-see sights, along with the old residences. A subterranean courtyard and tall windcatchers lend features of beautiful Persian architecture, while adjoining arcades, tiled minarets, and a modest dome recall traditional Islamic constructions. Intricate woodwork, mirrors, plasterwork, and geometric tiles add to the grandeur of this modest brick mosque. It's a tranquil setting in which to spend some time alone with your thoughts.

Shah Cheragh is a mosque dedicated to the seventh Shia Imam's twin sons. It may appear conventional from the outside, with its intricate tiles, gold-dipped minarets, and blue dome, but the inside is breathtaking, with thousands of angled shards of sparkling mirrors that reflect light. It's no surprise that the mirrored mosque's name translates to "King of Light."

Sheikh Lotfollah Mosque, a short distance from Imam Mosque, is known for its proudly off-center dome and absence of minarets. The cream-hued tiles change color throughout the day as the sun moves, giving them a reddish tint at times. The dome, with its arabesque motifs that get smaller as you get closer to the center, is undeniably the center of attention.

Sheikh Safi al-Din, the namesake mosque of the head of Sufi mysticism, is located in the northern city of Ardabil. It was built between the 16th and 18th centuries and features a blend of Sufi and Iranian traditional buildings as well as architectural depictions of Sufi mysticism's seven phases and eight attitudes. In 2010, this temple complex was included on the UNESCO World Heritage List.

The Blue Mosque's uneven walls of missing brilliant blue tiles from the towering entryway are scars from the devastation it sustained in a severe earthquake in 1779. Fine Islamic calligraphy, including Kufic and Thuluth scripts, as well as arabesque and geometric motifs, are on show inside the mosque. Despite its flaws, the Blue Mosque, while not as vast or imposing as its brethren in Esfahan and Shiraz, is nonetheless one of the most magnificent.

The twin minarets of the Jameh Mosque climb 52 meters (171 feet) into the sky, dominating the main mud-brick skyline and offering a splash of turquoise. This mosque, which was formerly the site of a 15th-century fire temple, now gives tourists a bewildering assortment of aesthetic embellishments to admire and photograph. The inside is full of honeycomb tiles, Kufic writing, and plasterwork, all leading to the beautiful star-filled dome. The towering doorway is covered with fine calligraphy and complicated geometric designs, while the interior is replete with honeycomb tiles, Kufic script, and plasterwork.

The Monastery of Saint Thaddeus (Qare Church) is one of Iran's oldest and most famous churches, having been inscribed on the UNESCO World Heritage List in 2008. This gorgeous church, located in West Azarbaijan Province, is one of the country's most notable Christian landmarks. During various seasons of the year, numerous Christians from surrounding countries visit this church. This church's architecture is distinctive, and the surrounding structures give it the appearance of a castle. Many people visit this place each year for various festivities and religious festivals, as Armenians regard this church to be the world's first church.

When Qazvin was conquered, Russian soldiers constructed this chapel. The grave of a Russian pilot can be found here.

This is the earliest Armenian Church built in Esfahan land, and it was built in 1065 AH when the Armenians emigrated to the area.

This church, which is located in the southern region of Iran in the city of Abadan, was founded in 1958 and has received numerous foreign and local visitors since then. The unique aspect of this church is that it is located next to Imam Musa ibn Jafar, a well-known mosque in this city, and it brilliantly depicts the respect and connection that exists between people of different religions. During the eight-year Iran-Iraq war, this mosque was converted into a training and preparation facility for soldiers. Because there are fewer Christians in this city nowadays, fewer rituals are conducted at St. Garapet church.

Saint Mary's Armenian Church is an Armenian Christian church in Tabriz, Iran, in the province of East Azerbaijan. It is Tabriz's largest and oldest Christian church, as well as a significant focus for Tabriz's Armenian community's patriotic and religious festivities. The church is located in Tabriz's Dik Bashi neighborhood. This church was erected in the 6th century AH (12th century AD), and Marco Polo, the great Venetian explorer who lived in the 8th century AH (14th century AD), included it in his trip diaries as a stopover on his journey to China. For many years, Saint Mary's was the seat of the Armenian archbishop of Azarbaijan.

This cathedral, which was built in 1970 and is located in the heart of Tehran, is an Armenian Apostolic church. The outside of the cathedral is composed of white marble, while the inside walls are adorned with biblical-themed artwork. It is Tehran's largest church, and there is an Armenian Genocide memorial in the building's courtyard, commemorating the Ottoman government's methodical slaughter of 1.5 million Armenians from 1914 to 1923.

This church, which originates from the ninth century, is located about 15 kilometers northwest of Jolfa city in East Azerbaijan. It was reconstructed during the Safavid dynasty after being devastated multiple times by earthquakes and warfare. This church is located in a lovely valley in a hilly environment. The monastery is surrounded by a stone fence, and the architecture and motifs carved into the stone have transformed it into a unique landmark popular with visitors.

Vank Church, commonly known as Holy Savior Cathedral, is one of Isfahan's most amazing sights. Vank Cathedral has been regarded among Iran's most important and beautiful cathedrals due to its stunning ceiling murals and distinctive architecture. This cathedral was constructed during the Safavid era when the Jolfa area of Isfahan was home to thousands of Armenians. The church's dome is comparable in form to domes seen in Safavid-era Iranian mosques, but it is distinguished by its inner murals and gildings. Visiting this cathedral while in Isfahan is a must.

The church edifice was pulled up the mountain with the utmost care and determination to rescue it from harm in the village of Barone in Zangar Valley. This church was built about the year 1000 AD.