Visa and entry requirements Northern Ireland:
Passport not required
No visa is required

Information from the Foreign Office about your trip to Northern Ireland:
https://www.auswaertiges-amt.de/de/grossbritanniensicherheit/206408

Northern Ireland is part of the United Kingdom of Great Britain with almost two million inhabitants. The country has a north-south extension of 140 kilometers, while the distance from west to east is 180 kilometers. The pound sterling is used as a means of payment in Northern Ireland.

The country's largest cities are Belfast, Derry, Newtownabbey, Craigavon, Bangor, Lisburn, Ballymena, Newtownards, Newry, Castlereagh, Enniskillen and Carrickfergus.

Around 85% of the Northern Irish population are very religious, half of them are either Catholic or Protestant.

Northern Ireland is a very safe country to travel to; there are no border controls with the neighboring Republic of Ireland. Since the late 1990s, the country has experienced a steady increase in tourism, which now stands at almost two million annual visitors. The most popular holiday activities in Northern Ireland include golfing, fishing, hiking and boating.

The land area of Northern Ireland offers several areas and landscapes worth seeing, such as the mountains of Morne, Lough Neagh, Lough Erne, Strangford Lough, Carlingford Lough, the Antrim Valleys, the Lakeland of Fermanagh, the Sperrin Mountains and some national parks.

The capital of Northern Ireland is Belfast with a population of approximately 350,000 people. The university city of Belfast is the second largest city on the island of Ireland after Dublin. The city is the seat of the government and parliament of Northern Ireland.

Belfast is world-famous as the hometown of the Titanic and the place where the world's most famous ship was built. In the historic “Thompson Dry Dock” you can now find out everything about the history of the legendary ship, which was still in perfect working order when it left Belfast.

The main attractions of Belfast include Donegall Square, City Hall, Linen Hall Library, Theater, St. Anne's Cathedral, Belfast Castle, the most famous pub - Crown Liquor Saloon, Queens University, Botanical Gardens, Peace Line of Belfast, the Titanic Museum, Belfast Zoo and Stormont Castle, the seat of the government.

The only time I have ever been to Belfast was in June 2016. Unfortunately, my EasyJet flight from London Gatwick to Belfast was delayed for over eight hours, so I had to cancel my planned excursions. The next early morning I tried to catch up on everything in a hurry because I was flying back to London in the afternoon.

Despite the lost day, I had a great time in Belfast and will definitely come back at some point to explore the rest of this exciting city.