Definitely worth a visit, very impressive church and it’s free to go inside although you have to be respectful and can’t take any photos or videos inside. Head there earlier in the morning around 9am for a clear view of the church without lots of people in front of the building. The walk up to the building itself takes around 5-10 minutes from the bottom and is a slight incline up a hill and some steps, but it’s very rewarding once you are up there. Also the parliament building is opposite and there is a small park too.

While steering totally clear of any travel to Russia, we thoroughly enjoyed visiting the historic Alexander Nevsky Cathedral from the Tsarist Russian era. Dominated by its five distinctive onion domes, the Cathedral itself was visually very striking. Its beautiful interior was absolutely stunning and provided such a contrast to most other cathedral interiors. Our visit was definitely time well spent.

I went there both in the evening and the early morning to photograph the imposing building. The latter proved the best for this purpose. In addition, we were on a walking tour in the late morning that brought me into the building too. Very impressive inside too.

Typical Russian Orthodox cathedral. Like any Orthodox church very rich in icons and of course it is forbidden to take pictures inside. The exterior is impressive and is best noticed climbing slowly up the hill. A beautiful experience

While visiting Tallinn, walked by the cathedral a few times while walking around old town. The cathedral was easy to spot when I arrived by ferry from Helsinki. Inside of the cathedral is nice as well. While taking a walking tour of old town, our tour guide provided some very interesting stories about the cathedral and its love/hate relationship with Estonia.

This Orthodox Church it’s a must see in Tallinn Old Town. An iconic piece of architecture, easy to find on the top of Toompea Hill and beautiful inside too. Free entry, sometimes could be a little bit crowded and somehow too noisy due to the tourists.

Very beautiful cathedral. Its a good view into Russian Orthodox buildings and icons. Amazing mosaics. We enjoyed walking around. There are very good postcards of the interior in the adjacent church shop. It gives one a good view of when Estonia was part of Russia

This Russian Byzantine style building dominates from Toompea Hill. Very nice even inside. It was consecrated in 1900. During the USSR rule it was wanted to be transformed into a planetarium. Closed during the German occupation, it was only reopened in 1945.

This church is one of the main attractions at the top of Toompea Hill, and it's very easy to find because of the distinctive "onion tops". You can go in for free, although donations are suggested. The interior is fairly small but beautifully decorated.

A beautiful building and iconic for Tallinn’s Old Town. As beautiful and photogenic as the outside is, the inside is that simple. There is little pomp and circumstance and almost looks gloomy. Still, this remains Tallinn’s eye-catcher and you must have visited it when you are here.