Flag Tower of Hanoi Monument

Historic Hanoi tower and national flag symbol

Inside the Imperial Citadel of Thang Long, the Flag Tower of Hanoi marks the site with a tall brick tower and large national flag; tourists photograph the structure and visit surrounding citadel museums.

Main image

Flag Tower of Hanoi at a Glance#

Address: Flag Tower (Cột cờ Hà Nội), within the Imperial Citadel area, Hanoi

Website: https://www.hanoitourism.gov.vn/

Hours: Open daily (citadel grounds) - typically daylight hours; exact public access hours for the Flag Tower may vary

Admission: Entrance to the Citadel area included in various heritage tickets; nominal local fees may apply

About Flag Tower of Hanoi#

The Flag Tower of Hanoi is a prominent stone tower within the Imperial Citadel of Thang Long in central Hanoi, Vietnam, built during the early 19th century as part of the citadel complex. It is one of the best-known symbols of the city and is visible from several points in the surrounding area.

The tower is composed of multiple tiers and a broad base, surmounted by a tall flagpole that flies the national flag. It is commonly photographed from the citadel grounds and nearby streets and serves as an emblematic landmark in Hanoi’s historic core.

Constructed in the early 1800s as part of the citadel’s defensive and signaling structures, the tower survived later urban changes and is preserved as part of the Thang Long citadel site. The citadel area now includes archaeological remains and conservation zones that document Hanoi’s historic development.

Located in central Hanoi, the Flag Tower sits within the Imperial Citadel complex north of the Hoan Kiem/Old Quarter area and is accessible from surrounding city streets and the citadel visitor routes.

  • Height and symbol: The tower stands at about 33 metres tall and is capped by a large Vietnamese flag that is a prominent city landmark.
  • Heritage context: It was built as part of the citadel complex and is preserved today within the Imperial Citadel of Thang Long, a protected historic area.

What to See#

  • Tower structure: A three-tiered stone tower with a large flagpole on top that has become a national symbol and is visible across the Imperial Citadel complex.
  • Citadel connection: Base levels and stair access around the tower form part of the larger Imperial Citadel of Thang Long complex, which includes archaeological remains and gates.

How to Get to Flag Tower of Hanoi#

Walkable from the Hoàn Kiếm area or a short taxi ride from central Hanoi. The Citadel and the Flag Tower are signposted; public buses and many hop-on services stop nearby.

Tips for Visiting Flag Tower of Hanoi#

  • View the Flag Tower from the Citadel grounds for the best photo angles - early morning light reduces backlighting and crowds.
  • Pair a visit with the nearby Imperial Citadel of Thang Long complex and the Hoan Kiem Lake area for a fuller historical context.
  • Avoid the hottest midday hours; late afternoon brings softer light and a more relaxed pace.

Best Time to Visit Flag Tower of Hanoi#

Spring and autumn are the most pleasant seasons for visiting Hanoi and the Flag Tower, offering comfortable temperatures and clearer skies.

Spring
Mar-Apr · 18-25°C
Comfortable temperatures and many cultural festivals.
Autumn
Sep-Nov · 20-26°C
Crisp air and clear skies, considered the most pleasant time of year in Hanoi.

Weather & Climate near Flag Tower of Hanoi#

Climate

Flag Tower of Hanoi's climate is classified as Humid Subtropical (Dry Winter) - Humid Subtropical (Dry Winter) climate with hot summers (peaking in June) and mild winters (coldest in January). Temperatures range from 14°C to 32°C. Abundant rainfall (1646 mm/year), wettest in August with a pronounced dry season.

Air Quality: AQI 108 Unhealthy (Sg)
Best Time to Visit
NovemberDecemberMarch
Temperature & Rainfall
Temperature Range
42°
Warmest Month
2°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Good 14° - 20° 17° 18 mm overcast 81% 1.6 m/s 0.8 moderate 10.9h
February Good 15° - 20° 18° 29 mm overcast 80% 1.4 m/s 1.0 high 11.3h
March Very Good 18° - 23° 20° 39 mm overcast 80% 1.5 m/s 1.0 high 11.9h
April Very Good 21° - 27° 24° 93 mm overcast 78% 1.3 m/s 1.4 high 12.5h
May Good 24° - 31° 31° 195 mm overcast 80% 1.2 m/s 1.8 very high 13.0h
June Acceptable 26° - 33° 36° 246 mm overcast 84% 1.2 m/s 2.0 very high 13.3h
July Acceptable 26° - 32° 36° 274 mm overcast 85% 1.3 m/s 2.0 extreme 13.2h
August Acceptable 25° - 32° 35° 303 mm overcast 86% 1.0 m/s 2.0 very high 12.7h
September Acceptable 24° - 31° 32° 247 mm overcast 85% 0.8 m/s 1.7 very high 12.2h
October Very Good 22° - 29° 25° 134 mm partly cloudy 84% 1.1 m/s 1.3 high 11.5h
November Excellent 18° - 25° 22° 49 mm partly cloudy 82% 1.3 m/s 1.1 high 11.0h
December Very Good 15° - 22° 19° 19 mm overcast 80% 1.3 m/s 0.8 moderate 10.7h

Nearby Attractions to Flag Tower of Hanoi#