There are several SPA hotels in Kuressaare, see a few of them here:
Also, in booking.com look for:
Georg Ots SPA Hotel
Grand Rose SPA Hotel
Johan Design & SPA Hotel
The folk story tells there is no bottom, but nowadays the depth is 16 meters. In 1930's some iron ochides was found and that's the evidence this is a meteorite crater. Water diameter is 50 meters and the whole crater about 110.
Researchers have different opinions about the age, once quess is 3500 years ago and assumptions tells that the meteriote could have been 20-80 tons with a speed of 10-20km/s.
The Kaali crater is no 8 in world's list of biggest craters (No one is in Arizona, US with size of 1200 m).
Kuressaare Fortress is surounded by a ditch on which you can row now. The fortification walls are several meters thick and covered with ivy and grass. Inside is a museum and a place for open air theatre.
Andrey was very impressed after attending this place. I have scepsis about this "cosmic" things. Anyway, near the place Kaali is round small lake. All informations tell that this is the place where meteorite felt.
This big rock is named after Piret, the wife of mythological hero Suur Toll. As everywhere in Estonia and Latvia almost every big rock or stone has a legend. The legend about Piretkivi you can read in www.saaremaa.ee.
This was the centre of pagan Saaremaa before German crusaders took over the island in 1227. After heavy and merciless fighting for Muhu fortress (see my Muhu Things to do tip) German knights with their allies came to Valjala and took Valjala hill fort without a fight although Saaremaa islanders were very brave soldiers (they often made raids in lands of Baltic tribes in Latvia and to Scandinavian land overseas). Islanders converted to Christianity and agreed to be ruled by Germans. This castle mound is very different from almost all other Latvian or Estonian castle mounds - Valjala hill fort is fifed by stones all over the hill fort.
This church is built in 13th century. It is very impressive by its size and as a fortified building. Originally it was a part of a castle surrounded by walls which belonged to Livonian Order. In 1343 the settlement was besieged by Estonian rebels during St.George's Night Uprising. After 8 days of siege Germans asked the rebels to let them leave the castle. Estonians agreed, but when German knights left the castle they were killed by rebels. The rebellion in Saaremaa lasted till 1345 when it was opressed by Germans.
In my opinion this is one of the most impressive places in Saaremaa. Of course, it can not be compared to the cliffs in Ireland or somewhere else, but in Baltic countries where we have no hills at all it really looks very good. This cliff was used as a place where people made sacrifices for better fishing. According to www.saaremaa.ee the last act of sacrifice took place as late as 1960's during Soviet times. It could be a big mistake thinking that Saarlanders really convertetd to Christianity in 1227. They made only to save their lives (in this worls not paradise). Actually they still continued to worship their pagan gods for many centuries.
This castle of Livonian Order was built few years after Poide stronghold was destroyed. Maasilinna ruins may seem so unimpressive you could even change your mind and go immediately further without visiting the ruins, but the main attraction there is not what you can see at first look. The main attraction is cellars of castle which you can enter and wander around. Do not miss them!
Depending on your interests this could be the highlight of your visit to Saaremaa. The biggest of them is the 8th biggest meteorite crater in the world. I have read that at least half of the Europe could seen the light of explosion and this event could be in the basis of ancient Greek myth when Phaeton crushed in his father Helios (god of the sun) chariot. I don't know if many of scientists think so, but at least there is such a hypothesis.
A huge lime-stone castle from the 13th century, unique in the whole Baltic area.
Today it is functioning as a regional heritage museum, and museum of art.
And I also found such link:
This castle is one of the best preserved medieval castles of the Baltics. Its purpose was as often the defence of the Bishop more against the population of the island itself than against enemies coming from elsewhere (it reminds me in some way of Salzburg in this respect)
The Kõpu peninsula is in the west of Hiiumaa, with 68 m the highest part of the whole island. A lighthouse warns the ships of a dangerous sandbank since the middle ages. In the 18th century the Earl Ludwig von Ungern-Stenberg set up a wrong fire elsewhere to lure the ships to a place where they wrecked and since by law all the goods of the wrecked ships were belonging to the finder he enhanced his wealth considerably.
On the most southern point of Saaremaa there is an lighthouse.....behind the lighthouse there are still a bit of destroyed Soviet bunkers wich not long ago should "protect" the Estonians from us horrible capitalistic neighbours on the other side of the Baltic sea.
The 'capital city' of Saaremaa isle, so charming and cosy.
Just wander around, enjoy the old traditional wooden houses, visit Kuressaare fortress and don't forget to go to the sea at night, I did enjoy this sooo much.