Observatory

Originally built to look at celestial events, the towering Observatory gathers knowledge that proves to be unrivaled in its value for alliances. Aside from watching the stars and the sky, monitoring terrestrial events helps to detect new resources and to gain an edge over the competitors.
Properties
Type:	Great Building
Age:	No Age
Street:	1x1
Size:	3x3
Construction Cost:	10 Marble 10 Lumber 10 Dye 10 Stone 10 Wine
Boosts
Guild Goods	Produces some of each current good for the guild's treasury. Can only be collected when in a guild.
Fierce resistance	Defending units have their attack and defense values boosted by a percentage. Also, guild gains an amount to their support pool.

Level	Requires
1	50	1,775	3	3%
2	70	2,825	4	6%
3	130	4,775	4	9%
4	200	7,775	5	12%
5	270	11,825	6	15%
6	330	16,775	6	18%
7	420	23,075	7	21%
8	490	30,425	7	24%
9	570	38,975	8	27%
10	650	48,725	8	30%
Level	Requires
11	667	58,730	10	30.5%
12	683	68,975	12	31%
13	700	79,475	14	31.5%
14	718	90,245	16	32%
15	736	101,285	18	32.5%
16	754	112,595	20	33%
17	773	124,190	22	33.5%
18	792	136,070	24	34%
19	812	148,250	26	34.5%
20	833	160,745	28	35%
Level	Requires
21	853	173,540	30	35.5%
22	875	186,665	32	36%
23	897	200,120	34	36.5%
24	919	213,905	36	37%
25	942	228,035	38	37.5%
26	965	242,510	40	38%
27	990	257,360	42	38.5%
28	1,014	272,570	44	39%
29	1,040	288,170	46	39.5%
30	1,066	304,160	48	40%
Level	Requires
31	1,092	320,540	50	40.5%
32	1,120	337,340	52	41%
33	1,147	354,545	54	41.5%
34	1,176	372,185	56	42%
35	1,206	390,275	58	42.5%
36	1,236	408,815	60	43%
37	1,267	427,820	62	43.5%
38	1,298	447,290	64	44%
39	1,331	467,255	66	44.5%
40	1,364	487,715	68	45%
Level	Requires
41	1,398	508,685	70	45.5%
42	1,433	530,180	72	46%
43	1,469	552,215	74	46.5%
44	1,505	574,790	76	47%
45	1,543	597,935	78	47.5%
46	1,582	621,665	80	48%
47	1,621	645,980	82	48.5%
48	1,662	670,910	84	49%
49	1,703	696,455	86	49.5%
50	1,746	722,645	88	50%
Level	Requires
51	1,789	749,480	90	50.5%
52	1,834	776,990	92	51%
53	1,880	805,190	94	51.5%
54	1,927	834,095	96	52%
55	1,975	863,720	98	52.5%
56	2,025	894,095	100	53%
57	2,075	925,220	102	53.5%
58	2,127	957,125	104	54%
59	2,180	989,825	106	54.5%
60	2,235	1,023,350	108	55%
Level	Requires
61	2,290	1,057,700	110	55.5%
62	2,348	1,092,920	112	56%
63	2,406	1,129,010	114	56.5%
64	2,467	1,166,015	116	57%
65	2,528	1,203,935	118	57.5%
66	2,591	1,242,800	120	58%
67	2,656	1,282,640	122	58.5%
68	2,723	1,323,485	124	59%
69	2,791	1,365,350	126	59.5%
70	2,860	1,408,250	128	60%
Level	Requires
71	2,932	1,452,230	130	60.5%
72	3,005	1,497,305	132	61%
73	3,080	1,543,505	134	61.5%
74	3,157	1,590,860	136	62%
75	3,236	1,639,400	138	62.5%
76	3,317	1,689,155	140	63%
77	3,400	1,740,155	142	63.5%
78	3,485	1,792,430	144	64%
79	3,572	1,846,010	146	64.5%
80	3,661	1,900,925	148	65%