There is some kind of a confusion in this area. There is a cross symbol here which cannot be queried, and when I zoom in, it disappears. The blue area (object 85256735) is marked as a footpath, but it is tagged as "denomination=catholic". (There is indeed a church here - the "Holy Trinity Church" - "Kostel Nejsvětější Trojice", but it is a part of the Kuks Hospital building - object 55828366. Apparently, object 85256735 is open air area in front of the church with stairs and the like.) See e.g. photo of the entrance: https://commons.wikimedia.org/wiki/File:Hospital_Kuks_from_vineyard.jpg

Objects 2283228474 and 2283228475 appear to misuse tag "historic=monument". Also change "artwork_type=sculpture" to "artwork_type=statue", and add artist_name=Matyáš Bernard Braun.

For the segments of the street "Národní", it would be useful to add tag alt_name="Národní třída". (Common name of the street; the word "třída" means "big street", "avenue".)

By the way, is there a way to associate the street segments together so that searching for the street's name returns the street as a whole? The segments are: 7654224, 299273175, 299273172, 299273174, 4319511, 141509441. (That's the segments I found.)

Object 3846335770. Add wikimedia_commons=Category:Cross_at_Kobylisy_Shooting_Range (see https://commons.wikimedia.org/wiki/Category:Cross_at_Kobylisy_Shooting_Range ).

Object 282841402. Add artwork_type=statue, material=bronze, name=Vzdor, artist_name="Miloš Zet". See https://commons.wikimedia.org/wiki/Category:Vzdor_%28Milo%C5%A1_Zet%29

The object (27247652) is both a monument of Emperor Francis and a water basin/fountain and should be also marked as "amenity=fountain". (If an object matches multiple categories - here "memorial" and "fountain", which one takes precedence when rendering the object on the map?)

Object 928167545. Change name to "Památník katastrofy na dole Döllinger". Add related URLs: http://www.hornictvi.info/podzemi/nestesti/01.htm , http://litvinov.sator.eu/kategorie/okolni-obce/duchcov/pamatnik-katastrofe-na-dole-dollinger , Wikipedia: "cs:Katastrofa na dole Döllinger"

The relation 33992 (World Heritage Site "Gardens and castle at Kroměříž") should be extended to include the nearby garden "Podzámecká zahrada" (object 420106855).

Also, what is the policy if an object is on multiple registries? As mentioned above, the castle and gardens are a UNESCO World Heritage Site (number 860) - http://whc.unesco.org/en/list/860 . The same site is a Czech Republic National Cultural Monument (number 219) - http://pamatkovykatalog.cz?legalState=84142&action=legalState&presenter=LegalStatesResults . By law, National Cultural Monuments are selected from Cultural Monuments of the Czech Republic; this National Cultural Monument consists of two Cultural Monuments: Castle with the garden Podzámecká zahrada (number 11794/7-6010) -
http://pamatkovykatalog.cz?legalState=127688&action=legalState&presenter=LegalStatesResults , and Květná zahrada as a separate object (number 11793/7-6029) - http://pamatkovykatalog.cz?legalState=148357&action=legalState&presenter=LegalStatesResults .